Answer: True
Explanation:
When an allele that is dominate and favoured in an individual carrying are heterozygous and the large fitness difference between heterozygous and the homozygotes not in use results to a rapid change in the frequencies of the allele.
Directional selection benefits one of the extreme traits defined by one of the h0m0zyg0us genotypes. The change in frequencies will be faster if the original population has a higher number of heter0zyg0us individuals. True.
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A population that is under the effects of directional selection, experiences an increase in the proportion of individuals expressing an extreme phenotype, different from the original one.
In these cases, interactions between living organisms and the environment modify in the same direction.
Directional selection benefits one of the extreme traits -defined by one of the h0m0zyg0us genotypes-, over the other extreme trait and over the intermediate phenotype -heter0zyg0us one-.
If directional selection is acting on a population favoring one of the h0m0zyg0us genotypes and
The change in the allele frequency will be faster if the original population has a higher frequency of heterozyg0us individuals.
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