natural selection review

____ is when members of a species that are best adapted for their environment survive and reproduce more.

• natural selection

• artificial selection

• speciation

• adaptation

Adaptations are traits that allow an organism to:

• eat and drink

• sleep and grow

• survive and reproduce

• be happy and have fun

What does "fitness" mean in evolutionary biology?

• How fast an organism can run

• How well an organism can survive and reproduce

• That an organism is strong

• The different traits in a population

Which of the following means "change over time"

• natural selection
• speciation
• evolution
• isolation

Organisms pass their traits onto their offspring through their __________________.

• genes

• command

• wishes

• design

Which example best demonstrates survival of the fittest?

• In a population of birds, some have bigger beaks than others

• The hawks with the best eyesight will catch the most prey and survive to reproduce the best

• In rattlesnakes, the ability to make strong poison is passed from parent to offspring

• The percentage of grey mice will increase over time because they have camouflage

Individuals that are well adapted to their environment will survive and produce:

• Fewer mutations
• Stronger genes
• More offspring
• Better traits

The differences among a species, like different color mice, are called

• theories

• variations

• adaptations

• genes

A trait passed from parent to offspring through DNA.

• Natural Resources
• Survival of the Fittest
• Genetic variation
• Genetic trait

Some lizards have different size legs. Lizards with longer legs are able to better access food. Over time Lizards with short legs became less common.

What is the adaptation?

• Lizards

• Long legs

• Leg size

• Food