6.1 Natural Selection

Why are advantageous traits more likely to be passed onto offspring?

• Because they are more likely to survive and reproduce.

• Because they come from dominant alleles.

• Because they come from recessive alleles.

• Because the organism knew it needed that trait, survives, and passes it on.

The differences among a species, like different bird beaks, are called

• genes.
• variations.
• traits.
• theories.

What process is being shown in this image?

• Variation
• Natural Selection
• Selective Breeding
• Homeostasis

Where do adaptations come from?

• The individual organism decides to adapt

• Mutations that give an organism an advantage in its environment

• Genetic recombination during meiosis

• Both mutations and genetic recombination are sources of adaptation

Organisms that are better adapted to the environment survive to pass traits to their offspring

• Natural Selection
• Homeostasis
• Selective Breeding
• Extinction

All rabbits of the same species living in a particular area would be an example of a(n)

• population

• species

• community

• ecosystem

Which organisms are most likely to survive?

• the best adapted
• the fastest
• the strongest
• the most domesticated (tamed)

Genetic drift is change in the allele frequency of a population due to...

• random chance
• natural selection
• non-random mating (sexual selection)
• artificial selection

 Genetic Drift is more likely to happen in... 

• aquatic populations
• small populations
• terrestrial populations
• older populations

This mechanism of evolution occurs when individuals migrate between populations.

• Extinction
• Gene flow
• Genetic drift
• Natural Selection