Darwin based his theory of evolution by natural selection on his observations of the
a. genotypes of individuals.
b. phenotypes of individuals.
c. genotypes of populations.
d. phenotypes of populations.
Is this a or d?
Why is this the first option for Natural selection causes changes in(1 point)
Responses
populations.
populations.
phenotypes.
phenotypes.
individuals.
individuals.
genotypes.?
The correct answer is d. Darwin based his theory of evolution by natural selection on his observations of the phenotypes of populations.
To answer this question, we need to understand what Darwin observed and used as evidence for his theory of evolution by natural selection. Darwin primarily focused on studying the phenotypes of individuals within populations.
Phenotypes are the physical characteristics and traits of an organism that can be observed, such as its appearance, behavior, or physiology. In contrast, genotypes refer to the genetic makeup of an individual or population. While genotypes play a role in determining phenotypes, Darwin's observations were primarily focused on the visible, observable traits - the phenotypes - which he used as evidence to formulate his theory of evolution.
Therefore, the correct answer is b. phenotypes of individuals.