Question

QUESTION 10 A lizard population has two alleles conferring different tolerance to heat stress. In stressful heat conditions, the following genotypes give on average the following number of offspring per reproductive season: Att/Atn = 10; Att/Att=20; Atn/Atn = 3. If this lizard population has an initial frequency for the allele Att of 0.3, what will the frequency of Att be in the next generation under stressful heat conditions? 0.52 0.48 0 037 0.24

Answer 1

Answer:

Att/Atn = 10; Att/Att = 20; Atn/Atn = 3

Frequency (f) Att = 0.3

The frequency of Att in the next generation under stressful heat conditions will be 0.37. The allelic frequency in a gene pool has rare changes in one generation and therefore, in this case the allelic frequency of Att is near about similar. According to the Hardy-Weinberg principle, the allelic frequencies remain constant from one generation to the next, or remain in equilibrium. This is one of the basis of population genetics. There will changes in allelic frequency when the conditions for Hardy-Weinberg equilibrium is deviated. The conditions are, a) population is infinitely large, b) no selection occurs, c) mating is random, d) no migration and e) no mutation. The study shown here doesn’t deviates any of those conditions.