Charles Darwin II | Biology | Quiz

Ecological adaptations can become widely spread within a wild population by

differential reproduction.

artificial selection.

discretionary breeding.

genetic mutations.
The forces that shape reproductive success are called

struggles for existence.

adaptations.

selective pressures.

population drive.
The difference between the number of individuals born in a population and the number that actually reproduce suggests that adaptation is at work.

true

false
Although we know that natural selection is always there, we can't _____ its effect.

measure

predict

deny

reconstruct
Choose the BEST option to complete this sentence: Darwin suggested that the physical characteristics of a population will change over time because

disease will kill off a portion of the population before they are able to reproduce.

those with the traits best suited to the environment will survive to reproduce.

the number of offspring born in a population will increase over time.

physical variation occurs naturally in any given population.
When environmental change occurs, those with the traits best suited to the new environment will have the greatest chance of survival.

true

false
Why is it impossible to predict how natural selection will effect a population?

It is impossible to tell how the population will interact with the environment.

It is impossible to know which traits serve certain functions.

It is impossible to know how other factors might affect the population.

It is impossible to tell the individuals within a population apart.