If a mutation introduces a new fur color in a rat population, which factor might determine whether the frequency of the new allele will increase?

whether the mutation makes some rats more fit for their environment than other rats

whether the mutation was caused by nature or by human intervention

how many phenotypes the population has

how many other alleles are present

Natural selection could not occur without

competition for unlimited resources

The bones labeled X can be referred to as ____ structures and provide evidence that organisms___:

homologous; share a common ancestor

fossil structures; must have lived at different times

sequential; evolved in response to each other

The change from one species into two or more distinct species.

The movement of a group of organisms into a new area.

The ability to mate and reproduce.

The death of an entire species.

When a population is at Hardy-Weinberg equilibrium, the allele frequencies should remain constant. Which of the following populations is most likely experiencing Hardy-Weinberg equilibrium?

In a large moth population, both red and orange moths are consistently abundant

In a spider population, the males with the most intricate courtship dance get selected as mates more quickly than other male spiders.

In a mosquito population, being heterozygous for a given trait makes the individuals resistant to four viral infections

What is suggested by the similarity of early embryos of different species of vertebrates?

evolution from a distant common ancestor

no evolutionary relationships between the groups

similar environments in the past

Ch 18: Evolution of Populations

Authored by Danielle Soraghan

Biology

9th Grade

30 Questions

NGSS covered

Used 21+ times

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MULTIPLE CHOICE QUESTION

30 sec • 1 pt

All of the genes of all members of a population

Fitness

Adaptation

Genetic drift

Gene pool

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Random changes in an organism's DNA sequence. They ONLY way to get new traits in a population

gene shuffling

gene pool

mutation

evolution

Tags

NGSS.HS-LS4-2

NGSS.HS-LS3-2

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which type of selection does this graph represent?

Disruptive selection

Stabilizing selection

Directional selection

Artificial selection

Tags

NGSS.HS-LS4-2

NGSS.HS-LS4-4

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which type of selection does this graph represent?

Disruptive selection

Stabilizing selection

Directional selection

Artificial selection

Tags

NGSS.HS-LS4-2

NGSS.HS-LS4-4

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which type of selection does this graph represent?

Disruptive selection

Stabilizing selection

Directional selection

Artificial selection

Tags

NGSS.HS-LS4-4

NGSS.HS-LS4-5

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Changes in the gene pool that leads to evolution; occurs when the gene frequencies in a population change

Speciation

Genetic drift

Isolation

Gene pool

Tags

NGSS.HS-LS4-2

NGSS.HS-LS4-4

NGSS.HS-LS4-5

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What are the two main sources of genetic variation in living things?

Equilibrium and Relative Frequency

Mutations and Gene Shuffling

Single-gene and Polygenic traits

Asexual Reproduction and Gene Pools

Tags

NGSS.HS-LS4-2

NGSS.HS-LS3-2

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Ch 18: Evolution of Populations

All of the genes of all members of a population

Random changes in an organism's DNA sequence. They ONLY way to get new traits in a population

Which type of selection does this graph represent?

Which type of selection does this graph represent?

Which type of selection does this graph represent?

Changes in the gene pool that leads to evolution; occurs when the gene frequencies in a population change

What are the two main sources of genetic variation in living things?

Which types of traits are only controlled by one gene?

Type of trait that offers a broad range of possible phenotypes

Type of traits that produce phenotypes that are described as "one or the other", meaning there are only two possible phenotypes.

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