Evolution & Natural Selection Flashcard

Front

What is variation in the context of evolution?

Back

Variation refers to the differences among individual members of the same species.

Front

What does the principle of superposition state about fossils?

Back

According to superposition, the fossils found in the lower layer of rocks are older than those found at higher layers.

Front

What is the inherited variation in lizards with different leg sizes?

Back

The inherited variation is leg size.

Front

What term did Darwin use to describe the ability of an organism to survive and reproduce?

Back

Darwin called this ability fitness.

Front

What are the evidences for evolution?

Back

The evidences for evolution include Fossil Records, Embryology, and Similar body structures.

Front

Define natural selection.

Back

Natural selection is the process where organisms better adapted to their environment tend to survive and produce more offspring.

Front

What is adaptation in evolutionary biology?

Back

Adaptation is a trait that helps an organism survive and reproduce in its environment.

Front

Explain the concept of fitness in evolution.

Back

Fitness refers to an organism's ability to survive and reproduce in its environment.

Front

What is the significance of fossil records in understanding evolution?

Back

Fossil records provide evidence of past life forms and show how species have changed over time.

Front

What role does embryology play in evolutionary evidence?

Back

Embryology shows similarities in the early development stages of different species, indicating common ancestry.