In cats, the gene for coat color is found on the X chromosome. Shown below is a mass of cells making up an early female cat embryo. The X chromosomes are shown in each cell; this embryo has one orange coat color allele (O) and one black coat color allele (B). Which of the following is ACCURATE about this embryo? 
A. Since it is heterozygous, it will give rise to a calico cat with two Barr bodies in each cell.
B. It will give rise to an orange cat, as the paternal chromosomes carrying the black allele will be inactivated.
C. It will give rise to a black cat, because black is dominant to orange.
D. It will give rise to a calico cat.
E. Since it is heterozygous, it will give rise to a cat with two Barr bodies in each cell.
Answer: D
You might also like to view...
The influenza viral envelope is unique because it contains only one type of protein
Indicate whether the statement is true or false.
Your finger touches a hot pot on the stove. Information is carried via ____ neurons to the ____, where it connects to
the ____, which signal you to move your hand.
a. afferent; thalamus; efferent b. efferent; thalamus; afferent c. afferent; spinal cord; efferent d. efferent; spinal cord; afferent e. afferent; somatosensory cortex; efferent
Darwin's observations of finches from the Galápagos included which of the following?
a. The 13 finch species were descended from a common ancestor. b. The 13 finch species each had differently-shaped bills. c. The 13 finch species had migrated from South America. d. The 13 finch species had different food preferences e. The 13 finch species had similar DNA sequences
The model of eukaryotic DNA replication control via a licensing factor suggests that active licensing factor becomes associated with DNA
a. during replication. b. during mitosis, when the nuclear envelope breaks down. c. immediately following replication. d. immediately before mitosis, when chromosomes begin to condense. e. immediately following mitosis.