Evolution and Natural Selection II

Front

What is the term for a slight difference in an inherited trait between individual members of the same species?

Back

Variations

Front

In a polluted environment where trees are covered in soot, which moth will be more successful?

Back

Dark moth

Front

What is a well-tested concept that explains a wide range of observations called?

Back

Scientific theory

Front

Who is the English natural scientist that formulated a theory of evolution by natural selection?

Back

Darwin

Front

What does competition refer to in the context of natural selection?

Back

A growing population causes a scarcity of resources.

Front

What is natural selection?

Back

The process where organisms with traits well suited to their environment survive and reproduce at a greater rate.

Front

What are adaptations?

Back

Inherited characteristics that increase an organism's chances of survival.

Front

What are homologous structures?

Back

Anatomical features in different species that share a common ancestry.

Front

What are analogous structures?

Back

Body parts in different species that serve similar functions but do not share a common ancestry.

Front

What is the role of mutations in evolution?

Back

Mutations introduce new genetic variations that can be beneficial, harmful, or neutral.