While on His Beagle Voyage,Darwin's Biological Discoveries Led Him to Adopt

question 27

Multiple Choice

While on his Beagle voyage,Darwin's biological discoveries led him to adopt two general lines of thinking that would prove important to the development of his theory of evolution.These two lines of thinking emphasized the geographical distributions of species and the

• A) adaptive functions of animals' distinctive characteristics.
• B) genetic relationship between species.
• C) sexual behavior of animals.
• D) fundamental differences between human beings and other animals.

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Definitions:

Homozygous Recessive

An individual that has inherited two identical alleles for a particular trait from each parent, manifesting a trait that is only expressed when dominant alleles are absent.

Sterile Offspring

Individuals that are unable to reproduce due to genetic or physical abnormalities.

Natural Selection

The process by which organisms better adapted to their environment tend to survive and produce more offspring, driving evolution.

Genotype

The genetic constitution of an individual organism, encompassing all the genes inherited from the parents.