In human beings, the gene for red green colorblindness (r) is sex linked and recessive to...

50.1K

Verified Solution

Question

Biology

In human beings, the gene for red green colorblindness (r) issex linked and recessive to its allele for normal vision (R), whilethe gene for freckles (F) is autosomal and dominant over its allelefor nonfreckled (f). A nonfreckled, normal visioned woman whosefather was freckled and colorblind, marries a freckled, colorblindman whose mother was nonfreckled.
a. What is the genotype of the woman's father? b. What is theprobability that the couple's first child will be a non-freckled,normal visioned girl c. What is the probability that the first twochildren born to the couple will be freckled and colorblind girls?d. What is the probability that the first child born to the couplewill either be a freckled, colorblind boy or a non freckled, normalvisioned girl or a non-freckled, normal visioned boy e. What is theprobability that the first four children born to the couple will befreckled and normal visioned girls?

Answer & Explanation Solved by verified expert

3.8 Ratings (683 Votes)

colorblindness is a sexlinked recessive traitlet the alleles be XR normal vision Xr colorblindnessFfreckles f nonfreckleda womans father is freckled and colorblindthe woman is nonfreckled so her genotype is ff so she hasinherited f allele from both parents so the genotype of the fatheris FfXrY since the man is colorblind his genotype is XrYthe genotype of a womansFather is FfXrYb since the Womans father is the colorblind woman hasinherited Xr allele from the father so her genotype is ffXRXrMan is colorblind and has freckles but his mother has nofreckles so her genotype is ff she has passed f allele to her sonhe has freckles so his genotype is FfXrYffXRXr FfXrYlets divide this See Answer

Get Answers to Unlimited Questions

Join us to gain access to millions of questions and expert answers. Enjoy exclusive benefits tailored just for you!

Membership Benefits:

Unlimited Question Access with detailed Answers
Zin AI - 3 Million Words
10 Dall-E 3 Images
20 Plot Generations
Conversation with Dialogue Memory
No Ads, Ever!
Access to Our Best AI Platform: Flex AI - Your personal assistant for all your inquiries!

Become a Member