Understand the effects of mutations - Middle School Life Science

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Question

Which of the following statements about mutations is FALSE?

Answer

A mutation is a genetic variation that happens by chance. A mutation is not necessarily good or bad. Some mutations are harmful, and end up causing the organism to die sooner than its counterparts. Some mutations have no effect on an organism at all. Other mutations that are inheritable and beneficial, have the potential to become standard in a population. Through the process of natural selection, more individuals with beneficial mutations will survive than those without it, and it will lead to an increase in the expression of those certain traits. This is ultimately how evolution occurs.

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Question

Which of the following is NOT a kind of mutation?

Answer

The answer is "transformation."

A mutation is a genetic variation that happens by chance. A mutation is not necessarily good or bad. Some mutations are harmful, and end up causing the organism to die sooner than its counterparts. Some mutations have no effect on an organism at all. Other mutations that are inheritable and beneficial, have the potential to become standard in a population. Through the process of natural selection, more individuals with beneficial mutations will survive than those without it, and it will lead to an increase in the expression of those certain traits. This is ultimately how evolution occurs.

Some types of mutations:

Deletion: When a segment of DNA is lost, so there is a missing segment in the chromosome. These usually result in many genes missing from the chromosome.

Duplication: When a segment of DNA is repeated, creating a longer chromosome. These usually result in multiple copies of genes in the chromosome.

Inversion: When a segment of DNA is flipped and then reattached to the same chromosome.

Insertion: When a segment of DNA from one chromosome is added to another, unrelated chromosome.

Translocation: When two segments from different chromosomes change positions.

Compare your answer with the correct one above

Question

Why do mutations occur?

Answer

The answer is "all of these." Mutations can happen spontaneously during replication, or by contact with chemicals in the environment called mutagens.

A mutation is a genetic variation that happens by chance. A mutation is not necessarily good or bad. Some mutations are harmful, and end up causing the organism to die sooner than its counterparts. Some mutations have no effect on an organism at all. Other mutations that are inheritable and beneficial, have the potential to become standard in a population. Through the process of natural selection, more individuals with beneficial mutations will survive than those without it, and it will lead to an increase in the expression of those certain traits. This is ultimately how evolution occurs.

Some types of mutations:

Deletion: When a segment of DNA is lost, so there is a missing segment in the chromosome. These usually result in many genes missing from the chromosome.

Duplication: When a segment of DNA is repeated, creating a longer chromosome. These usually result in multiple copies of genes in the chromosome.

Inversion: When a segment of DNA is flipped and then reattached to the same chromosome.

Insertion: When a segment of DNA from one chromosome is added to another, unrelated chromosome.

Translocation: When two segments from different chromosomes change positions.

Compare your answer with the correct one above

Question

Screen shot 2020 06 11 at 10.06.14 am

Where in this diagram does a point mutation occur?

Answer

The answer is "at one or a few nucelotides in a gene sequence" because point mutations are small changes in a few nucleotides that can shift the effects of an entire gene sequence.

A mutation is a genetic variation that happens by chance. A mutation is not necessarily good or bad. Some mutations are harmful, and end up causing the organism to die sooner than its counterparts. Some mutations have no effect on an organism at all. Other mutations that are inheritable and beneficial, have the potential to become standard in a population. Through the process of natural selection, more individuals with beneficial mutations will survive than those without it, and it will lead to an increase in the expression of those certain traits. This is ultimately how evolution occurs.

Some types of mutations:

Deletion: When a segment of DNA is lost, so there is a missing segment in the chromosome. These usually result in many genes missing from the chromosome.

Duplication: When a segment of DNA is repeated, creating a longer chromosome. These usually result in multiple copies of genes in the chromosome.

Inversion: When a segment of DNA is flipped and then reattached to the same chromosome.

Insertion: When a segment of DNA from one chromosome is added to another, unrelated chromosome.

Translocation: When two segments from different chromosomes change positions.

Compare your answer with the correct one above

Question

Screen shot 2020 06 11 at 10.05.52 am

What would happen if the section of DNA pictured was accidentally deleted during the process of replication?

Answer

A mutation is a genetic variation that happens by chance. A mutation is not necessarily good or bad. Some mutations are harmful, and end up causing the organism to die sooner than its counterparts. Some mutations have no effect on an organism at all. Other mutations that are inheritable and beneficial, have the potential to become standard in a population. Through the process of natural selection, more individuals with beneficial mutations will survive than those without it, and it will lead to an increase in the expression of those certain traits. This is ultimately how evolution occurs.

Some types of mutations:

Deletion: When a segment of DNA is lost, so there is a missing segment in the chromosome. These usually result in many genes missing from the chromosome.

Duplication: When a segment of DNA is repeated, creating a longer chromosome. These usually result in multiple copies of genes in the chromosome.

Inversion: When a segment of DNA is flipped and then reattached to the same chromosome.

Insertion: When a segment of DNA from one chromosome is added to another, unrelated chromosome.

Translocation: When two segments from different chromosomes change positions.

Compare your answer with the correct one above

Question

Which of these would most likely cause a mutation?

Answer

The answer is "the insertion of a nucleotide into DNA."

A mutation is a genetic variation that happens by chance. A mutation is not necessarily good or bad. Some mutations are harmful, and end up causing the organism to die sooner than its counterparts. Some mutations have no effect on an organism at all. Other mutations that are inheritable and beneficial, have the potential to become standard in a population. Through the process of natural selection, more individuals with beneficial mutations will survive than those without it, and it will lead to an increase in the expression of those certain traits. This is ultimately how evolution occurs.

Some types of mutations:

Deletion: When a segment of DNA is lost, so there is a missing segment in the chromosome. These usually result in many genes missing from the chromosome.

Duplication: When a segment of DNA is repeated, creating a longer chromosome. These usually result in multiple copies of genes in the chromosome.

Inversion: When a segment of DNA is flipped and then reattached to the same chromosome.

Insertion: When a segment of DNA from one chromosome is added to another, unrelated chromosome.

Translocation: When two segments from different chromosomes change positions.

Compare your answer with the correct one above

Question

A disease in humans is caused by a change in one codon in a gene from GAA to GUA. This disease is caused by:

Answer

The answer is "a mutation."

A mutation is a genetic variation that happens by chance. A mutation is not necessarily good or bad. Some mutations are harmful, and end up causing the organism to die sooner than its counterparts. Some mutations have no effect on an organism at all. Other mutations that are inheritable and beneficial, have the potential to become standard in a population. Through the process of natural selection, more individuals with beneficial mutations will survive than those without it, and it will lead to an increase in the expression of those certain traits. This is ultimately how evolution occurs.

Some types of mutations:

Deletion: When a segment of DNA is lost, so there is a missing segment in the chromosome. These usually result in many genes missing from the chromosome.

Duplication: When a segment of DNA is repeated, creating a longer chromosome. These usually result in multiple copies of genes in the chromosome.

Inversion: When a segment of DNA is flipped and then reattached to the same chromosome.

Insertion: When a segment of DNA from one chromosome is added to another, unrelated chromosome.

Translocation: When two segments from different chromosomes change positions.

Compare your answer with the correct one above

Question

Mutations in DNA are:

Answer

A mutation is a genetic variation that happens by chance. A mutation is not necessarily good or bad. Some mutations are harmful, and end up causing the organism to die sooner than its counterparts. Some mutations have no effect on an organism at all. Other mutations that are inheritable and beneficial, have the potential to become standard in a population. Through the process of natural selection, more individuals with beneficial mutations will survive than those without it, and it will lead to an increase in the expression of those certain traits. This is ultimately how evolution occurs.

Some types of mutations:

Deletion: When a segment of DNA is lost, so there is a missing segment in the chromosome. These usually result in many genes missing from the chromosome.

Duplication: When a segment of DNA is repeated, creating a longer chromosome. These usually result in multiple copies of genes in the chromosome.

Inversion: When a segment of DNA is flipped and then reattached to the same chromosome.

Insertion: When a segment of DNA from one chromosome is added to another, unrelated chromosome.

Translocation: When two segments from different chromosomes change positions.

Compare your answer with the correct one above

Question

A mutation in which of these types of cells could be passed to an organism's offspring?

Answer

The answer is "an egg cell"

A mutation is a genetic variation that happens by chance. A mutation is not necessarily good or bad. Some mutations are harmful, and end up causing the organism to die sooner than its counterparts. Some mutations have no effect on an organism at all. Other mutations that are inheritable and beneficial, have the potential to become standard in a population. Through the process of natural selection, more individuals with beneficial mutations will survive than those without it, and it will lead to an increase in the expression of those certain traits. This is ultimately how evolution occurs.

Some types of mutations:

Deletion: When a segment of DNA is lost, so there is a missing segment in the chromosome. These usually result in many genes missing from the chromosome.

Duplication: When a segment of DNA is repeated, creating a longer chromosome. These usually result in multiple copies of genes in the chromosome.

Inversion: When a segment of DNA is flipped and then reattached to the same chromosome.

Insertion: When a segment of DNA from one chromosome is added to another, unrelated chromosome.

Translocation: When two segments from different chromosomes change positions.

Compare your answer with the correct one above

Question

During DNA replication, the wrong nucleotide was inserted into the DNA sequence. Which of the following best describes this situation?

Answer

The answer is "a mutation."

A mutation is a genetic variation that happens by chance. A mutation is not necessarily good or bad. Some mutations are harmful, and end up causing the organism to die sooner than its counterparts. Some mutations have no effect on an organism at all. Other mutations that are inheritable and beneficial, have the potential to become standard in a population. Through the process of natural selection, more individuals with beneficial mutations will survive than those without it, and it will lead to an increase in the expression of those certain traits. This is ultimately how evolution occurs.

Some types of mutations:

Deletion: When a segment of DNA is lost, so there is a missing segment in the chromosome. These usually result in many genes missing from the chromosome.

Duplication: When a segment of DNA is repeated, creating a longer chromosome. These usually result in multiple copies of genes in the chromosome.

Inversion: When a segment of DNA is flipped and then reattached to the same chromosome.

Insertion: When a segment of DNA from one chromosome is added to another, unrelated chromosome.

Translocation: When two segments from different chromosomes change positions.

Compare your answer with the correct one above

Question

Which of the following statements about mutations is FALSE?

Answer

A mutation is a genetic variation that happens by chance. A mutation is not necessarily good or bad. Some mutations are harmful, and end up causing the organism to die sooner than its counterparts. Some mutations have no effect on an organism at all. Other mutations that are inheritable and beneficial, have the potential to become standard in a population. Through the process of natural selection, more individuals with beneficial mutations will survive than those without it, and it will lead to an increase in the expression of those certain traits. This is ultimately how evolution occurs.

Compare your answer with the correct one above

Question

Which of the following is NOT a kind of mutation?

Answer

The answer is "transformation."

A mutation is a genetic variation that happens by chance. A mutation is not necessarily good or bad. Some mutations are harmful, and end up causing the organism to die sooner than its counterparts. Some mutations have no effect on an organism at all. Other mutations that are inheritable and beneficial, have the potential to become standard in a population. Through the process of natural selection, more individuals with beneficial mutations will survive than those without it, and it will lead to an increase in the expression of those certain traits. This is ultimately how evolution occurs.

Some types of mutations:

Deletion: When a segment of DNA is lost, so there is a missing segment in the chromosome. These usually result in many genes missing from the chromosome.

Duplication: When a segment of DNA is repeated, creating a longer chromosome. These usually result in multiple copies of genes in the chromosome.

Inversion: When a segment of DNA is flipped and then reattached to the same chromosome.

Insertion: When a segment of DNA from one chromosome is added to another, unrelated chromosome.

Translocation: When two segments from different chromosomes change positions.

Compare your answer with the correct one above

Question

Why do mutations occur?

Answer

The answer is "all of these." Mutations can happen spontaneously during replication, or by contact with chemicals in the environment called mutagens.

A mutation is a genetic variation that happens by chance. A mutation is not necessarily good or bad. Some mutations are harmful, and end up causing the organism to die sooner than its counterparts. Some mutations have no effect on an organism at all. Other mutations that are inheritable and beneficial, have the potential to become standard in a population. Through the process of natural selection, more individuals with beneficial mutations will survive than those without it, and it will lead to an increase in the expression of those certain traits. This is ultimately how evolution occurs.

Some types of mutations:

Deletion: When a segment of DNA is lost, so there is a missing segment in the chromosome. These usually result in many genes missing from the chromosome.

Duplication: When a segment of DNA is repeated, creating a longer chromosome. These usually result in multiple copies of genes in the chromosome.

Inversion: When a segment of DNA is flipped and then reattached to the same chromosome.

Insertion: When a segment of DNA from one chromosome is added to another, unrelated chromosome.

Translocation: When two segments from different chromosomes change positions.

Compare your answer with the correct one above

Question

Screen shot 2020 06 11 at 10.06.14 am

Where in this diagram does a point mutation occur?

Answer

The answer is "at one or a few nucelotides in a gene sequence" because point mutations are small changes in a few nucleotides that can shift the effects of an entire gene sequence.

A mutation is a genetic variation that happens by chance. A mutation is not necessarily good or bad. Some mutations are harmful, and end up causing the organism to die sooner than its counterparts. Some mutations have no effect on an organism at all. Other mutations that are inheritable and beneficial, have the potential to become standard in a population. Through the process of natural selection, more individuals with beneficial mutations will survive than those without it, and it will lead to an increase in the expression of those certain traits. This is ultimately how evolution occurs.

Some types of mutations:

Deletion: When a segment of DNA is lost, so there is a missing segment in the chromosome. These usually result in many genes missing from the chromosome.

Duplication: When a segment of DNA is repeated, creating a longer chromosome. These usually result in multiple copies of genes in the chromosome.

Inversion: When a segment of DNA is flipped and then reattached to the same chromosome.

Insertion: When a segment of DNA from one chromosome is added to another, unrelated chromosome.

Translocation: When two segments from different chromosomes change positions.

Compare your answer with the correct one above

Question

Screen shot 2020 06 11 at 10.05.52 am

What would happen if the section of DNA pictured was accidentally deleted during the process of replication?

Answer

A mutation is a genetic variation that happens by chance. A mutation is not necessarily good or bad. Some mutations are harmful, and end up causing the organism to die sooner than its counterparts. Some mutations have no effect on an organism at all. Other mutations that are inheritable and beneficial, have the potential to become standard in a population. Through the process of natural selection, more individuals with beneficial mutations will survive than those without it, and it will lead to an increase in the expression of those certain traits. This is ultimately how evolution occurs.

Some types of mutations:

Deletion: When a segment of DNA is lost, so there is a missing segment in the chromosome. These usually result in many genes missing from the chromosome.

Duplication: When a segment of DNA is repeated, creating a longer chromosome. These usually result in multiple copies of genes in the chromosome.

Inversion: When a segment of DNA is flipped and then reattached to the same chromosome.

Insertion: When a segment of DNA from one chromosome is added to another, unrelated chromosome.

Translocation: When two segments from different chromosomes change positions.

Compare your answer with the correct one above

Question

Which of these would most likely cause a mutation?

Answer

The answer is "the insertion of a nucleotide into DNA."

A mutation is a genetic variation that happens by chance. A mutation is not necessarily good or bad. Some mutations are harmful, and end up causing the organism to die sooner than its counterparts. Some mutations have no effect on an organism at all. Other mutations that are inheritable and beneficial, have the potential to become standard in a population. Through the process of natural selection, more individuals with beneficial mutations will survive than those without it, and it will lead to an increase in the expression of those certain traits. This is ultimately how evolution occurs.

Some types of mutations:

Deletion: When a segment of DNA is lost, so there is a missing segment in the chromosome. These usually result in many genes missing from the chromosome.

Duplication: When a segment of DNA is repeated, creating a longer chromosome. These usually result in multiple copies of genes in the chromosome.

Inversion: When a segment of DNA is flipped and then reattached to the same chromosome.

Insertion: When a segment of DNA from one chromosome is added to another, unrelated chromosome.

Translocation: When two segments from different chromosomes change positions.

Compare your answer with the correct one above

Question

A disease in humans is caused by a change in one codon in a gene from GAA to GUA. This disease is caused by:

Answer

The answer is "a mutation."

A mutation is a genetic variation that happens by chance. A mutation is not necessarily good or bad. Some mutations are harmful, and end up causing the organism to die sooner than its counterparts. Some mutations have no effect on an organism at all. Other mutations that are inheritable and beneficial, have the potential to become standard in a population. Through the process of natural selection, more individuals with beneficial mutations will survive than those without it, and it will lead to an increase in the expression of those certain traits. This is ultimately how evolution occurs.

Some types of mutations:

Deletion: When a segment of DNA is lost, so there is a missing segment in the chromosome. These usually result in many genes missing from the chromosome.

Duplication: When a segment of DNA is repeated, creating a longer chromosome. These usually result in multiple copies of genes in the chromosome.

Inversion: When a segment of DNA is flipped and then reattached to the same chromosome.

Insertion: When a segment of DNA from one chromosome is added to another, unrelated chromosome.

Translocation: When two segments from different chromosomes change positions.

Compare your answer with the correct one above

Question

Mutations in DNA are:

Answer

A mutation is a genetic variation that happens by chance. A mutation is not necessarily good or bad. Some mutations are harmful, and end up causing the organism to die sooner than its counterparts. Some mutations have no effect on an organism at all. Other mutations that are inheritable and beneficial, have the potential to become standard in a population. Through the process of natural selection, more individuals with beneficial mutations will survive than those without it, and it will lead to an increase in the expression of those certain traits. This is ultimately how evolution occurs.

Some types of mutations:

Deletion: When a segment of DNA is lost, so there is a missing segment in the chromosome. These usually result in many genes missing from the chromosome.

Duplication: When a segment of DNA is repeated, creating a longer chromosome. These usually result in multiple copies of genes in the chromosome.

Inversion: When a segment of DNA is flipped and then reattached to the same chromosome.

Insertion: When a segment of DNA from one chromosome is added to another, unrelated chromosome.

Translocation: When two segments from different chromosomes change positions.

Compare your answer with the correct one above

Question

A mutation in which of these types of cells could be passed to an organism's offspring?

Answer

The answer is "an egg cell"

A mutation is a genetic variation that happens by chance. A mutation is not necessarily good or bad. Some mutations are harmful, and end up causing the organism to die sooner than its counterparts. Some mutations have no effect on an organism at all. Other mutations that are inheritable and beneficial, have the potential to become standard in a population. Through the process of natural selection, more individuals with beneficial mutations will survive than those without it, and it will lead to an increase in the expression of those certain traits. This is ultimately how evolution occurs.

Some types of mutations:

Deletion: When a segment of DNA is lost, so there is a missing segment in the chromosome. These usually result in many genes missing from the chromosome.

Duplication: When a segment of DNA is repeated, creating a longer chromosome. These usually result in multiple copies of genes in the chromosome.

Inversion: When a segment of DNA is flipped and then reattached to the same chromosome.

Insertion: When a segment of DNA from one chromosome is added to another, unrelated chromosome.

Translocation: When two segments from different chromosomes change positions.

Compare your answer with the correct one above

Question

During DNA replication, the wrong nucleotide was inserted into the DNA sequence. Which of the following best describes this situation?

Answer

The answer is "a mutation."

A mutation is a genetic variation that happens by chance. A mutation is not necessarily good or bad. Some mutations are harmful, and end up causing the organism to die sooner than its counterparts. Some mutations have no effect on an organism at all. Other mutations that are inheritable and beneficial, have the potential to become standard in a population. Through the process of natural selection, more individuals with beneficial mutations will survive than those without it, and it will lead to an increase in the expression of those certain traits. This is ultimately how evolution occurs.

Some types of mutations:

Deletion: When a segment of DNA is lost, so there is a missing segment in the chromosome. These usually result in many genes missing from the chromosome.

Duplication: When a segment of DNA is repeated, creating a longer chromosome. These usually result in multiple copies of genes in the chromosome.

Inversion: When a segment of DNA is flipped and then reattached to the same chromosome.

Insertion: When a segment of DNA from one chromosome is added to another, unrelated chromosome.

Translocation: When two segments from different chromosomes change positions.

Compare your answer with the correct one above

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