OBJECTIVE LIFE SCIENCE
GENETICS
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
A white mouse who parents are both white produces only brown offspring when mated with a brown mouse. The white mouse is most probably?
|
|
homozygous dominant
|
|
|
heterozygous
|
|
|
homozygous recessive
|
|
|
haploid
|
Explanation:
Detailed explanation-1: -CC or Cc mice are agouti. Mice with genotype cc are albino because all pigment production and deposition of pigment in hair is blocked.
Detailed explanation-2: -To get only brown offspring, we need to make sure that both parents only contribute the brown allele to their offspring. 5. We can do this by crossing the two black mice and selecting only the offspring that are brown.
Detailed explanation-3: -What is a Homozygous Recessive Genotype? A homozygous recessive genotype, as mentioned above, has two recessive alleles. In genetics, this is designated with two of the same lower case letters such as aa. This shows the genes that were inherited from each parent were recessive.
There is 1 question to complete.