HELP NEEDED A. 0.342. B. 0.870. C. 0.067. D. 0.250. E. 0.667. On the island of B
ID: 282368 • Letter: H
Question
HELP NEEDED
A. 0.342.
B. 0.870.
C. 0.067.
D. 0.250.
E. 0.667.
On the island of Bilago, on the Planet Ceti Alpha 6, there lives a population of armadiles (cross between an armadillo and a crocodile). A portion of these armadi les have small teeth; as a result, they are vegetarian. About 15% of vegetarians on the planet are amradies. Tooth size is determined by a single autosomal locus with two alleles: T (trait allele) and t (wild type allele). In a recent study, researchers collected the values in the following table: Table 1. Counts of armadile tooth sizes by genotype Phenotype Small teeth 100 65 10 Genotype Standard size (wild type) teeth 1% 10 150 Tt The T allele frequency in this population is 0.45, and the genotypes are in Hardy-Weinberg proportions at the locus. In a mating of Tt (heterozygous) armadiles, what is the expected proportion of offspring that will have small teeth?Explanation / Answer
The mating of Tt (heterozygous) armadilles is given in the following punnett square,
The offsprings are produced in the genotypic ratio of 1:2:1. So, the expected proportion of offsprings having small teeth is,
= 1/4
= 0.25
(Option D).
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