Starring Role

Which statement best describes how reproduction leads to natural selection in a population? Organisms do not produce many offspring, so all of them can survive and pass on their traits. Organisms overproduce offspring; consequently, all of them are likely...

Explain the relationship between mutations, adaptations, natural selection, and extinction.

The mice living in an area changed from having brightly colored fur to having darkly colored fur. How did natural selection most likely result in this evolutionary change? Bright mice were not able to blend into their environment as easily as dark mice, s...

Which causes genetic variations and can result in different alleles? predation rate random mutations competition environmental changes

In a mouse population, some mice have thicker fur than others, but there are more mice with thinner fur. The climate in which these mice live has slowly gotten colder. How will this change in the environment most likely affect the mouse population? The ad...