3 years ago

What is the best definition of directional selection

2 answers:

OverLord2011 [107]3 years ago

7 0

In population genetics, directional selection is a mode of natural selection in which an extreme phenotype is favored over other phenotype, causing the allele frequency to shift over time in the direction of that phenotype

vodomira [7]3 years ago

6 0

Directional selection is a mode of natural selection an extreme phenotype is favored over other phenotypes this causes the allele to shift over time in the direction of the favored phenotype

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The one-toed horse of today steadily evolved from its five-toed ancestor.

Vesnalui [34]

Answer:

It is true that one-toed horse of today steadily evolved from its five-toed ancestor.

Explanation:

Evolution is the law of nature.There is a continuous process of evolution in each biological species in nature.
Similarly, horses had 5 toes millions of year back, but according to the theory of gradualism their use decreased and toes started fusing.
Now, its only one toe at present but the vestigial left over provides the solid evidence for the fact that horses had 5 toes in the past.