Help with Other Inheritance Patterns

Practice Questions

GRE Subject Test: Biochemistry, Cell, and Molecular Biology › Help with Other Inheritance Patterns

Questions
6
1

Each of the listed statements about transposable genetic elements in eukaryotic genomes are true except for which one?

2

Which of the following are examples of codominance?

I. A person with blood type AB

II. A flower that displays a red and white spotted phenotype (both colors are attributed to the same gene; homozygosity for either color makes a flower that is completely red or white)

III. A flower that displays a pink phenotype (a homozygous dominant flower is red and a homozygous recessive flower is white)

IV. An organism whose heterozygous phenotype is identical to the homozygous dominant phenotype

3

A student determines that color for a new diploid species is conferred by one gene. The student mates a homozygous dominant red mother with a homozygous recessive green father to yeild 100% of offspring that are both red and green. What form of inheritance best describes this?

4

Crossing foxes that are double heterozygotes for two genes regulating coat color yields 27 grey, 12 red and 9 black offspring. What mechanism explains the ratio of coat color observed in the offspring?

5

Human beings are capable of having A, B, AB or O blood. While "A" and "B" alleles can be expressed at the same time on red blood cells, O type blood can only be a phenotype if a person has 2 "O" alleles.

Based on this information, what two modes of inheritance contribute to blood type in human beings?

6

When the expression and subsequent phenotype of one gene is dependent on the expression of another gene, this type of phenonemon is known as __________.

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