Which understanding do modern biologists have that Darwin did not have?
A) The tendency of individuals to resemble their parents
B) The common ancestry of species that exist today
C) The details of genetic inheritance
D) The operation of natural selection on changes in species over time
E) The greater similarity of species in temperate and tropical regions of South America than of species in temperate regions of South America and Europe

Question

Quizplus · Accepted Answer

Modern biologists have a much more detailed understanding of genetic inheritance than Darwin did. Today's biologists are able to study genetic material and understand how specific traits are inherited and expressed, whereas Darwin was limited to observing the outward appearance and behavior of organisms.

Answer: B
 Darwin proposed the idea of common ancestry between species, but modern biologists have since been able to provide substantial evidence to support this theory through genetic and fossil evidence. Additionally, modern biologists have a better understanding of how species diverge and evolve over time through processes such as genetic drift, gene flow, and mutation.

Which Understanding Do Modern Biologists Have That Darwin Did Not