Question

You are studying a population of sunflowers and you observe that there are two alleles for stem length. Allele 1 codes for fat stems and is dominant over allele 2, which codes for thin stems. Allele 2 is at a frequency of 20?

1) -0.04
2) -0.32
3) -0.50
4) -0.64
5) -0.89

Answer 1

The subject covers genetic concepts such as allele frequencies, Mendelian genetics, and the use of Punnett squares to predict genotypic and phenotypic outcomes in a given population.

Step-by-step explanation:

The question involves the concepts of genetic and allele frequencies within a population of sunflowers, which relates to the Hardy-Weinberg principle and Mendelian genetics. When considering allele frequencies, one must take into account homozygous and heterozygous combinations. Recall that for a gene with two possible alleles, the frequency of a dominant allele in a homozygous dominant population would be 1, while in a population composed entirely of heterozygous individuals, the frequency would be 0.5. When analyzing phenotypic ratios, especially in an F2 generation, one expects to see a consistency with Mendelian ratios , such as 9:3:3:1 in dihybrid crosses. These principles are illustrated by using Punnett squares to predict genotypic and phenotypic outcomes of genetic crosses.