{{asɛmtiNe Ɔkyerɛwfo}} | Nhomakorabea | Nneɛma a ɛma wotumi yɛ ade

Ɛhia

1

The graphs show changes in allele frequencies in a population at three points in time as a drought becomes more severe.
Which statement best describes how natural selection affects alleles?

Natural selection affects alleles randomly, leading to small changes in allele frequencies.

Natural selection affects allele frequencies in individuals, not in populations.

Natural selection affects allele frequencies differently depending on how helpful an allele is to an organism’s fitness for its environment.

Natural selection always affects how the same allele influences an organism’s reproductive success.

1

The species are both herbivores.

The species have similar bone structure.

The species live in the same environment

The species both obtain oxygen from the air.

1

to look like other birds

to change their environments

to copy behaviors of other similar birds

to help them survive in their environments

1

Yes, they know they need to change to survive

No, they change because of natural selection

0

Draggable item		Corresponding Item
Adaptations		an organism’s ability to survive and reproduce
Natural selection		traits that are favorable in a specific environment (random and formed by mutations from generation to generation)
Evolution		when an organism has more offspring because of a favored genetic trait/allele, leading to an increase in that favored trait/allele
Fitness		a change in allele/trait frequency over time