A gene encoding a subunit of hemoglobin in humans is found to be homologous to a gene in chimpanzees. The homologous gene in chimpanzees likely _____.
A) is a pseudogene
B) encodes the same hemoglobin subunit
C) is inactive because it is in a different species
D) is a regulatory sequence
E) encodes a respiratory enzyme

Question

Quizplus · Accepted Answer

Homologous genes in different species often encode proteins that perform similar functions. Since the gene in humans encodes a subunit of hemoglobin, the homologous gene in chimpanzees is likely to encode the same or a very similar hemoglobin subunit, given the close evolutionary relationship between humans and chimpanzees.

A Gene Encoding a Subunit of Hemoglobin in Humans Is