What has been learned from comparative genomics studies?
A) Similar genes in different organisms perform very different functions.
B) Prokaryotic DNA has different nucleotide bases compared to eukaryotic DNA.
C) Similar genes do not exist in different species.
D) Some genes are present in the genomes of almost all present-day organisms.
E) Different species can have identical genome sequences.

Question

Quizplus · Accepted Answer

Comparative genomics studies have shown that some genes are highly conserved across different species, indicating their fundamental role in basic biological processes. These genes are present in the genomes of almost all present-day organisms, highlighting their importance in life's evolutionary history.

What Has Been Learned from Comparative Genomics Studies