Question

A population of cats divided depending on the tail length. There are 180 cats with long tails and genotype double uppercase T, 240 cats with a long tail and genotype uppercase T lowercase t, and 80 cats with short tails and genotype double lowercase t. Drag the numbers on the left to the appropriate blanks on the right to answer these questions about a hypothetical cat population.
What is the frequency of cats with long tails in the population?
(A) 0.16
(B) 0.36
(C) 0.40
(D) 0.48
(E) 0.60
(F) 0.84
(G) 80
(H) 180
(I) 420

Answer 1

Answer:

(F) 0.84

Explanation:

In this population of cats, there are two possible phenotype related to the tail length, long tail and short tail. According with the information given, we have the following distribution of phenotypes and genotypes in the population:

• TT -> long tail (180)
• Tt -> long tail (240)
• tt -> short tail (80)

The frequency of cats with long tail in the population can be calculated as the fraction of the cats that have the phenotype "long tail" in the population

Fraction of long tail phenotype=(TT individuals +  Tt individual)/(Total population)=(180+240)/(180+240+80)=420/500=0.84

So, the fraction of cats with long tail in the population is 0.84