Evolution of Populations and Speciation Review

Sexual dimorphism is often a result of...

• Females selecting traits she desires in a male 
• Males being more likely to survive than females
• Males and females competing for limited resources
• Artificial selection by humans

 Reproductive isolation results in...

• reduction of gene flow
• adaptation
• natural selection
• mutation

Tags

NGSS.HS-LS4-2

NGSS.HS-LS4-4

 All of these are pre-zygotic barriers EXCEPT

• Behavioural
• Temporal
• Mechanical
• Hybrid Sterility

One species of flower blooms in the spring, the other in the fall. They can not interbreed bc..

• Behavioral isolation
• Temporal isolation
• Mechanical isolation
• Hybrid sterility

The five-factors for evolution are gene flow, genetic drift, mutation, natural selection and ....

• non-random mating

• controlled mating

• emigration

• immigration

Tags

NGSS.HS-LS4-2

What kid of isolation occurs when two populations of birds have different courtship dances?

• geographic
• sexual
• temporal
• behavioral

Tags

NGSS.HS-LS4-4

Microevolution of a population is characterized by

• stable allele frequencies.

• changing allele frequencies.

• stable phenotype frequencies.

• changing phenotype frequencies.

Tags

NGSS.HS-LS4-4

In a population of bears, the frequency of the recessive allele is 0.44. What is the frequency of the dominant allele?

• 0.1936

• 0.44

• 0.56

• 0.22

Tags

NGSS.HS-LS3-3

Which of the following is NOT a requirement for Hardy-Weinberg equilibrium?

• small population

• no gene flow (no migration)

• no mutations

• no selection

• random mating

Which of the following is an example of gene flow?

• A subordinate wolf successfully challenges the alpha male and mates with pack females.

• A deer picks up spores from a plant as it grazes and deposits them next to that plant.

• A young stallion is driven out of its herd by the alpha stallion and begins a brand new herd in another location.

• A male frog from an upstream population is swept downstream and mates with female frogs there.