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Alexeev081 [22]
3 years ago
5

please show work Nerodia sipedon insularum is a species of the Northern Water Snake that lives on islands in the western part of

Lake Erie. This snake exhibits polymorphism (many color forms) and can be described as Banded (BB), intermediate (Bb) and unbanded (bb). The mainland populations of this snake are all banded. The islands have sandy shores which the snakes reside compared to rocky shores of the mainland. In 1980-1984, Richard King conducted a study of mark recapture to look at the numbers of each of these morphs of snakes and for the Island of Pelee this was the population size: Banded: 71 individuals; Intermediate: 80 individuals; Unbanded 20 individuals. Give the genotypic frequencies for each morph and then give the allele frequencies for this population.
Biology
1 answer:
raketka [301]3 years ago
5 0

Answer:

Explanation:

From the question, the total population = 171 i.e (80+71+21)

Genetic frequency therefore; BB = 71/171 = 0.42

Bb = 80/171 = 0.47

bb = 20/171 = 0.12

Allele frequency therefore;

Allele B = 0.42+(0.50×0.47) = 0.66

Allele b = (0.50×0.47)+0.12 = 0.36

Note all values were rounded up to two significant figures

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