Most black bears (Ursus americanus) are black or brown in color. However, occasional white bears of...

70.2K

Verified Solution

Question

Biology

Most black bears (Ursus americanus) are black or brownin color. However, occasional white bears of this species appear insome populations along the coast of British Columbia. KermitRitland and his colleagues determined that white coat color inthese bears results from a recessive mutation (g) causedby a single nucleotide replacement in which guanine substitutes foradenine at the melanocortin-1 receptor locus (mcr1), thesame locus responsible or red hair in humans. (K. Ritland, C.Newton, and H.D. Marshall. 2001. Current Biology 11:1468-1472). The wild type allele at this locus (G) encodesthe black or brown color. Ritland and his colleagues collectedsamples from bears on three islands and determined their genotypesat the mcr1 locus.
Genotype
number
GG
42
Gg
24
gg
21
a. What are the frequencies of the G and galleles in these bears?
b. Give the genotypic frequencies expected if the population isin Hardy-Weinberg equilibrium.

Answer & Explanation Solved by verified expert

4.0 Ratings (719 Votes)

The total number of the population 422421 87 a To find the frequency of G and g alleles the following formula is used frequency of G allele number of GG 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