Microevolution

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

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

All of the genetic information (all the potential alleles) found in a population.

• population

• genetic drift

• evolution

• gene pool

Tags

NGSS.HS-LS4-3

Which of the following is true?

• Gene pool frequencies do not change as a result of migration in or out of a population.
• Gene flow occurs only as a result of isolation of a small population.
• Gene flow can cause new alleles to enter a population's gene pool.
• Gene flow is due the the selection of the most favorable traits.

Tags

NGSS.HS-LS4-4

NGSS.HS-LS4-2

A change in a gene, group of genes or chromosome that results in a change in the proteins

• Replication

• Mutations

• Translation

• Transcription

Tags

NGSS.HS-LS3-2

NGSS.HS-LS3-1

A virus killed most of the seals in the North Sea (e.g. dropped the population from 8000 to 800).  In an effort to help preserve the species, scientists caught 20 of the remaining seals and used them to start a new population in the northwest Pacific Ocean.  Which of the following statements would accurately describe the new   population?  

• The new seal population is genetically less diverse than the original population 
• The new seal population is genetically more diverse than the original population
• There is equal genetic variety compared  to the original population 
• None of the answers

Tags

NGSS.HS-LS3-2

Which of the following is an example of the bottleneck effect?

• Bald Eagles are hunted until near extinction, population recovers.
• Small group of iguanas floats to an island, starts a new population.
• Red fox pups are more likely to survive in a snowy environment if they are born white.
• Farmer chooses seeds from largest apples to plant next year.  This results in larger apples from year to year.

Tags

NGSS.HS-LS4-2

NGSS.HS-LS4-5

A change in the genetic composition of a population as a result of descending from a small number of colonizing individuals is called:

• founder effect
• bottleneck
• genetic drift
• gene flow

Genetic drift (bottleneck or founder) tends to ___________ genetic variation (diversity)

• Increase
• Decrease
• Stabilize
• Exaggerate 

Gene Flow tends to ___________ genetic variation (diversity)

• Increase
• Decrease
• Stabilize
• Exaggerate 

Tags

NGSS.HS-LS2-2

The picture shows a male and female pheasant. What type of selection occurred for them to have these adaptations?

• Natural Selection

• Evolution

• Sexual Selection

• Random Selection

Tags

NGSS.HS-LS4-4