In the study of evolution, scientists often look at homologous features in species.Which is least suitable for use as a homologous feature?
A) A DNA sequence coding for a protein in frogs
B) An anatomical structure in beetles
C) An inherited behavioral pattern of marmots
D) The secondary structure of a protein in Arctic fish
E) Learned behavior in guppies

Question

Quizplus · Accepted Answer

Learned behavior in guppies is least suitable for use as a homologous feature because it is not genetically determined or inherited, but rather acquired through environmental influences. Homologous features are traits that are shared among different species due to common ancestry and a common genetic basis, and learned behaviors do not fit this definition. The other choices (A-D) all involve genetic or anatomical traits that can be compared between different species to infer evolutionary relationships.

In the Study of Evolution, Scientists Often Look at Homologous