College level biology question please help me out 10 points?
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The frequency of individuals who cannot taste phenylthiocarbamide (PTC) is approximately 0.3. The inability to taste this bitter substance is due to a recessive allele. Assume that there are only two alleles in the population (namely, tasters, T, and nontasters, t) and that the population is in Hardy-Weinberg equilibrium. What is the frequency of the recessive allele in the population?
- 8 years agoFavorite Answer
We know that if frequency is 50% (everybody is a carrier), then 25% of their posterity will express the recessive trait. You are looking for something that would produce 30% (slightly greater than 25%), so D, or 55% makes sense.
Also, I want to say that the odds work something like .55 * .55 = 0.3025. That means that there is a 30% chance that two carriers will get together and both pass on the recessive trait to their offspring.Source(s): Pharmacy student