NEET BIOLOGY

Detailed explanation-1: -That’s because closely related species most likely diverged from one another fairly recently in the evolutionary span. Thus, they haven’t had as much time to accumulate random mutations in their genetic codes.

Detailed explanation-2: -Evolutionarily Related Gene Sequences Homologous genes can be generated by speciation, which produces pairs of orthologs (genes in different species that are derived from the same gene in the last common ancestral species, and thus usually have similar functions).

Detailed explanation-3: -The pattern of branching in a phylogenetic tree reflects how species or other groups evolved from a series of common ancestors. In trees, two species are more related if they have a more recent common ancestor and less related if they have a less recent common ancestor.

Detailed explanation-4: -common ancestor: The most recent ancestral form or species from which two different species evolved. comparative biology: The study of patterns among more than one species.