Most black bears (ursus americanus) are black or brown in color. however, occasional white bears of this species appear in some populations along the coast of british columbia. kermit ritland and his colleagues determined that white coat color in these bears results from a recessive mutation (g) caused by a single nucleotide replacement in which guanine substitutes for adenine at the melanocortin 1 receptor locus (mcr1), the same locus responsible for 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 (a) encodes black or brown color. ritland and his colleagues collected samples from bears on three islands and determined their genotypes at the mcr1 locus. (section 25.2) genotype number aa 42 ag 24 gg 21 a. what are the frequencies of the a and g alleles in these bears? b. give the genotypic frequencies expected if the population is in hardy–weinberg equilibrium. c. use a chi-square test to compare the number of observed genotypes with the number expected under hardy–weinberg equilibrium. is this population in hardy–weinberg equilibrium? note that df =1. show chi square value, df, p value, and interpretation.
Answers: 2
Biology, 22.06.2019 00:30, KittyLitty
If bacteria are much too small to see, what is one reason why can we see colonies in the petri dishes that have plenty of food to eat after only a few days?
Answers: 1
Biology, 22.06.2019 03:30, maloynegen7681
Why did rutherford say that bombarding atoms with particles was like "playing with marbles" what
Answers: 3
Biology, 22.06.2019 04:50, kannstyles709
What part of the brain is highlighted in the diagram below?
Answers: 2
Most black bears (ursus americanus) are black or brown in color. however, occasional white bears of...
Mathematics, 28.01.2022 06:20
Mathematics, 28.01.2022 06:20
Geography, 28.01.2022 06:20
Mathematics, 28.01.2022 06:20
Mathematics, 28.01.2022 06:20