The genetic underpinnings of a disease have recently been identified. This disease has been found to result from a single point mutation in the coding sequence of a gene. The normal coding sequence of this gene is 5' - GATTACG - 3'. Which of the following could be the disease-causing form of the gene?

Each person can have one of four possible blood types: A, B, AB, or O. Blood type A means that the "A" antigen is present on the red blood cell surface. Blood type B means that the "B" antigen is present on red blood cells' surfaces. Blood type "AB" means that both the "A" antigen and the "B" antigen are present on the red blood cells' surfaces. Blood type "O" means that no antigens are present on the red blood cells' surfaces.

Someone with genotype "A/A" or "A/O" will have type A blood. Someone with genotype "B/B" or "B/O" will have type B blood. Someone with genotype "A/B" will have AB blood, and someone with genotype "O/O" will have type O blood.

Assume that blood type is not a sex-linked trait. A mother with genotype "A/O" and a father with genotype "A/B" could NOT have a child with which blood type?

If one of an organism's gametes contains 16 chromosomes, how many chromosomes will one of its somatic cells contain?

In DNA molecules, Adenine pairs with which of the following nucleic acid bases?

Which of the following represents a phenotype?

If an organism's haploid number is 14, what is its diploid number?

A sample of RNA is sequenced and found to contain adenine. Which of the following conclusions can also be drawn about the sample?

During which of the following phases of the cell cycle does duplication of the genetic material occur?

A diploid cell has two sets of chromosomes, what is the diploid number for a human somatic cell if one human gamete has 23 chromosomes?

If an organism has a diploid number of 36, what is its haploid number?