Question

question 1
a succulent plant is grown in a low light situation so that it is very tall, pale, and has few leaves compared to its siblings grown in full sun. is this an evolutionary change or not, and why?
not evolution because no genetic changes
evolution because phenotypic change
not evolution because phenotypic change
a and c
question 2
you are studying the enzyme alcohol dehydrogenase in a population of drosophila. the allele frequency of the fast allele is 0.3 and the allele frequency of the slow allele is 0.7. assuming the population is in hardy weinberg equilibrium, what is the expected frequency of heterozygotes in the population?
0.21
0.09
0.49
0.42

Explanation:

Step1: Recall Hardy - Weinberg formula

The Hardy - Weinberg formula is \(p^{2}+2pq + q^{2}=1\), where \(p\) is the frequency of one allele, \(q\) is the frequency of the other allele, \(p^{2}\) is the frequency of homozygous for allele \(p\), \(q^{2}\) is the frequency of homozygous for allele \(q\), and \(2pq\) is the frequency of heterozygotes.

Step2: Substitute values

Given \(p = 0.3\) (frequency of fast allele) and \(q=0.7\) (frequency of slow allele).
We calculate \(2pq\):

$$
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$$

Answer:

0.42