The theory of evolution provides an explanation of how organisms have changed over time. Which of the following best supports the theory of evolution
A. Many diverse species share genetic similarities.

B. All modern species have very different genetics from one another.

C. All modern species are genetically identical.

D. Most related species do not share genetic similarities

B. All modern species have very different genetics from one another

Explanation:

The question asks for change over time and the only answer choice that is evident of change would be choice B.

1) gene flow

- it is described as the transfer of genes from one population to another population so that frequency of gene is increased.

-a zebra migrates to join a different herd of zebras.

2) natural selection

- a mechanism of evolutionary change in which individuals with advantageous traits survive and reproduce whereas the others ( those that can not adapt) eliminate from the population.

-competition for sunlight leads to taller trees.

3) mutation

- permanent change in the nucleotide sequence of dna ( genetic material) that could have harmful or useful consequences.

-the dna of a snake changes to make its venom stronger.

4) genetic drift - it is a random phenomenon ( that occurs by chance such as fire) that results in change in the gene frequency in a small population.    

-a grassfire randomly sweeps through a population of buffalo and kills most of the animals.

explanation:

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