Natural Selection Practice

Humans have been on every continent in the world and can be found living in every biome. All of the members of the human species are collectively referred to as the human –

• community

• population

• ecosystem

• organelles

The long-term survival of any species of organism is possible only if the organisms can —

• migrate when temperatures change

• reproduce successfully

• find protection from predators

• locate a constant food source

Tags

NGSS.HS-LS3-2

NGSS.HS-LS4-4

Which of the following scenarios is least likely to be associated with a population exceeding its carrying capacity?

• mutation rates are greatly reduced

• food resources have become limited

• all available habitats are occupied

• no new mating partners are available

Tags

NGSS.HS-LS2-1

NGSS.HS-LS2-2

What do we call different versions of a gene?

• adaptations

• carrying capacity

• alleles

• phenotype

What do we call the physical expression of a genetic trait?

• alleles

• phenotypes

• genotypes

• genes

Tags

NGSS.HS-LS4-4

What process creates new versions of a gene?

• alleles

• extinctions

• adaptations

• mutations

Tags

NGSS.HS-LS3-2

Populations tend to produce more offspring than can survive based on the resources available in the ecosystem. When this occurs, the organisms most likely to acquire resources and survive are those members of the population with the –

• most mutations

• most competition

• fewest strengths

• best adaptations

Tags

NGSS.HS-LS4-4

If an allele produces a beneficial adaptation, then the organism is more likely to –

• leave the population

• create offspring with mutations

• survive and reproduce

• be outcompeted for food

Tags

NGSS.HS-LS4-2

NGSS.HS-LS4-4

When a gene increases an organism’s ability to survive, and this organism goes on to reproduce more offspring with the gene, what will eventually increase?

• the carrying capacity of the population

• the number of genes in the offspring

• the frequency of the gene in the population

• the number of mutations in the organism

Tags

NGSS.HS-LS4-2

NGSS.HS-LS4-3

NGSS.HS-LS4-4

Which of the following circumstances is most likely to force a population to adapt to a new set of environmental conditions?

• the presence of a climax community

• an increase in available habitats

• a reduction in human activity in the area

• migration to a different climate

Tags

NGSS.HS-LS2-6

NGSS.HS-LS4-4

NGSS.HS-LS4-5