provide evidence of common ancestry among organisms. A:Variations in early embryos

B:Similarities in DNA sequences

C:Variations in chromosomes

D:Differences in nucleotide order

B:Similarities in DNA sequences

Explanation:

Molecular similarities provide evidence for the shared ancestry of life. DNA sequence comparisons can show how different species are related. Biogeography, the study of the geographical distribution of organisms, provides information about how and when species may have evolved.

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