Population Genetics

Question 0

Gene flow

Answer 0

The movement of genes from one population to another (when they migrate)

Question 1

Extinction

Answer 1

Permanent and complete removal of a species from an environment

Question 2

Immigration

Answer 2

Movement of genes into a population

Question 3

Emigration

Answer 3

Movement of genes out of a population

Question 4

Species

Answer 4

A group of individuals that can breed to produce fertile offspring ( babies can grow up and have babies)

Question 5

Speciation

Answer 5

The evolution of a new species

Question 6

Prezygotic barrier

Answer 6

Any barrier that prevent two individuals from being able to meet up and breed (river, valley, canyon)

Question 7

Geographic isolation

Answer 7

A type of pre-zygotic barrier in which individuals are physically deprecated from one another

Question 8

Allopathic separation

Answer 8

Speciation that results from geographic isolation

Question 9

Sympathetic speciation

Answer 9

Species that results without geographic isolation

Question 10

Pozygotic barrier

Answer 10

Any barrier that prevents two individuals from being able to create a fertile offspring. ( genetically different and the egg can’t be fertilized)

Question 11

Reproductive isolation

Answer 11

A type of post zygotic barrier in which individuals are physically unable to form fertile offspring even if they mate

Question 12

Polyploidy

Answer 12

A speciation event that occurs in plants

Question 13

Population

Answer 13

A group of individuals is the same species in the same place at the same time

Question 14

Gene pool

Answer 14

All the genes of a population

Question 15

Allele frequency

Answer 15

How common a particular allele is in a population

Question 16

Genetic equilibrium

Answer 16

When allele frequencies in a population do not change over time

Question 17

Mutation

Answer 17

A permanent change in the DNA, alters allele frequencies by adding new alleles

Question 18

Genetic drift

Answer 18

A change in allele frequencies due to a change of events

Question 19

Sexual/mate selection

Answer 19

Change in allele frequencies due to some males reproducing more than others because of the females preferences

Question 20

Migration

Answer 20

Change in allele frequencies by movement of individuals form one population to another

Question 21

Founder effect

Answer 21

A type of genetic drift event in which a populations allele frequencies are changed to to the settling of a new population to just a few individuals

Question 22

Bottleneck

Answer 22

A type of genetic drift in which a populations allele frequencies are changed due to the population being reduced dramatically to just a few individuals

Question 23

Speciation

Answer 23

The evolution of a new species