Population Genetics

Which of the following is an example of natural selection?

• Breeding horses, humans selecting which traits make the fastest race horses

• Giraffes with the longer necks will be most likely to survive, reproduce, and pass that trait to their offspring.

• Giraffes stretching their necks to reach leaves and passing that trait to their offspring.

• Cropping the ears of a boxer dog

Refer to the picture. This is representing

• Directional selection

• Disruptive selection

• Stabilizing selection

• Artificial selection

Tags

NGSS.HS-LS4-4

NGSS.HS-LS4-5

Refer to the picture. This is representing

• Directional selection

• Disruptive selection

• Stabilizing selection

• Artificial selection

Tags

NGSS.HS-LS4-4

Which of the following is an example of artificial selection?

• Different tortoise shell shapes, depending on the food available to them.

• Giraffes stretching their necks to reach leaves and passing that trait to their offspring.

• Dog breeding, humans selecting which traits are most beneficial

• Cropping the ears of a boxer dog

Refer to the picture. Which family has the highest fitness?

• Single child family

• Family with 2 children

• Big family

Refer to the picture. This is representing

• Directional selection

• Disruptive selection

• Stabilizing selection

• Artificial selection

Tags

NGSS.HS-LS4-4

NGSS.HS-LS4-5

This is the combinations of all of the genes present in a given population.

• genome

• allele frequency

• microevolution

• gene pool

Genetic equilibrium in a population refers to ..

• constant allele frequencies in successive generations

• constant mutation rate in the population

• equal numbers of dominant and recessive alleles

• equal numbers of males and females

A gene pool consists of ..

• all the alleles selected by natural selection

• all the alleles present in a population

• the entire genome of a sexually reproducing organism

• the frequencies of the alleles for a gene locus within a population

Random mating is defined as

• members of a population choose to mate with individuals of a particular phenotype

• members of a population choose to mate with unrelated individuals

• members of the population mate with each other without regard to their phenotypes or genotypes

• members of a population choose to mate with closely related individuals