Evolution and Natural Selection Flashcard

Front

Evolution in biology

Back

A change in the heritable traits within a population across generations

Front

How do DNA mutations affect an organism?

Back

They can introduce variations in the organism's traits

Front

What evidence supports the theory of evolution?

Back

The fossil record and genetic similarities among species

Front

What is a result of evolution as explained in the video?

Back

All dogs evolved from an ancestral group of gray wolves

Front

How does natural selection contribute to evolution?

Back

By guiding the random mutations to produce complex functions

Front

What initiates the process of natural selection within a population?

Back

Variation in traits

Front

How do variations in traits arise within a population?

Back

Through genetic combinations

Front

Why do some individuals in a population have a better chance of survival?

Back

They have traits better suited to their environment

Front

What role does the struggle for survival play in natural selection?

Back

It determines which traits are passed on to the next generation

Front

What is the outcome of natural selection on a population over time?

Back

Population becomes more adapted to its environment