Variations in Populations

Slight differences in the appearance of individual members of a species.

• variations

• adaptations

• ancestors

• natural selection

Tags

NGSS.MS-LS4-4

Island chain where Darwin observed many varieties of species.

• Hawaiian

• South American

• Galapagos

• Philipines

Tags

NGSS.MS-LS4-2

A beneficial __________ in neck length spreads throughout a tortoise population through natural selection.

• offspring

• species

• ancestor

• variation

Tags

NGSS.MS-LS4-4

The process by which populations of organisms with variations that help them survive in their environments live longer, compete better, and reproduce more than those that do not have the variation.

• Evolution

• natural selection

• adaptation

• extinction

Tags

NGSS.MS-LS4-4

Scientists measured the spot size of all the guppies (small fish) that lived in a river 40 years ago. They measured the spot size of the guppy population again last year. When was there more variation in the spot size of guppies in the river?

• These bar graphs do not show the amount of variation in the population.

• There was the same amount of variation in spot size 40 years ago and last year.

• There was more variation 40 years ago.

• There was more variation last year.

Tags

NGSS.MS-LS4-4

Explains how populations change as their environment changes.

• ancestor

• selective breeding

• artificial selection

• natural selection

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

NGSS.MS-LS4-4

All the observable traits and characteristics of the organism.

• Genotype

• phenotype

• karyotype

• prokaryotic

Tags

NGSS.HS-LS3-2

NGSS.HS-LS4-2

NGSS.HS-LS4-4

What is a variation within a population?

• A change in the environment.

• Differences in traits among individuals.

• A type of food that animals eat.

• A new species forming.

Tags

NGSS.MS-LS4-4

How can variations help a population survive a sudden change in the environment?

• By making all individuals identical.

• Providing different traits might be beneficial.

• By reducing the number of individuals.

• By making the environment change back.

Tags

NGSS.MS-LS4-4

Which of the following is an example of a variation in a plant population?

• .Identical flower colors.

• The same height for all plants.

• Different leaf shapes

• Uniform root length.

Tags

NGSS.MS-LS3-2

NGSS.MS-LS4-4