AP BIOLOGY

THE MOLECULAR BASIS OF INHERITANCE

DNA MAKES RNA MAKES PROTEIN

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
At birth Himalayan rabbits are usually white over their entire bodies. But when parts of their bodies reach temperatures below 35
A
poor blood circulation
B
infection caused by cold temperatures
C
gene expression that is regulated by temperature
D
a trait that is both sex linked and hormone dependent
Explanation: 

Detailed explanation-1: -The ch allele stands for Himalayan and appears as a white coat with dark ears, nose, feet, and tail. The c allele stands for albino and appears as a completely white coat. The cc genotype is epistatic to all other genotypes, so if a rabbit is cc it will be albino regardless of the rest of the genotypes.

Detailed explanation-2: -Answer and Explanation: The coat colour of the Himalayan rabbit is determined 100% by the environment.

Detailed explanation-3: -Description: The Himalayan rabbit is an excellent example of an organism that shows how the environment can affect traits. A rabbit kit (baby) that is exposed to as little as 20 minutes of cold will develop darker fur. Since the ears and feet of a Himalayan rabbit are colder they are generally black in color.

Detailed explanation-4: -In Himalayan rabbits, the genes for fur color produce a dark fur pigment in cold areas of the animal body, such as the feet and ears, whereas the remaining warmer areas have light fur color.

There is 1 question to complete.