Population Genetics

Question 1

Genetic drift

Answer 1

changes in genetic frequency due to random events

Question 2

Offspring exhibit traits passed on by …… genes

Answer 2

parental

Question 3

Example of genetic drift

Answer 3

wildflowers containing dominant and recessive genes

if dominant genes are gone, recessive genes will be expressed

Question 4

Island Biography

Answer 4

study factors that affect species diversity

Question 5

What is the premise for island biography

Answer 5

founder populations

Question 6

Immigration to an island is determined by its ……… to other land bodies

Answer 6

proximity

Question 7

Mouflon

Answer 7

wild sheep transported to an island in the Indian Ocean

Question 8

Why did the Mouflon not lose its genetic diversity

Answer 8

due to environmental pressures on the island

Question 9

Genetic drift should have caused the Mouflon to have a loss in ……..

Answer 9

genetic diversity

Question 10

Polydactylism

Answer 10

genetic abnormality

extra fingers and/or toes

Question 11

Polydactylism affects ……… out of …….. children

Answer 11

1; 500

Question 12

There is a higher incidence of Polydactylism among ……

Answer 12

Amish people

Question 13

Polydactylism is common in ……

Answer 13

cats

Question 14

Bottleneck events

Answer 14

a large percentage of the population is no longer part of the viable population

Question 15

What do bottleneck events lead to

Answer 15

severe reduction in genetic diversity
increase in inbreeding
higher rate of recessive traits expressed
reduces chance of survival for subsequent generations
can lead to extinction

Question 16

Which population experienced a bottleneck during the last Ice Age

Answer 16

the cheetah

Question 17

Which endangered species have a limited gene pool

Answer 17

cheetah

Question 18

The cheetah population has never fully recovered due to …… and ……..

Answer 18

over-hunting; habitat destruction

Question 19

Cheetahs have genetic effects due to ……..

Answer 19

interbreeding

Question 20

When did the American Bison population bottlenecked

Answer 20

during the 17th century

Question 21

Why did the American Bison population bottlenecked

Answer 21

European settlers slaughtered the bison

Question 22

The number of American Bison were down to ………by 1890’2

Answer 22

1,000

Question 23

Only …… of American Bison are part of conservation herds

Answer 23

4%

Question 24

The American Bison today have genes from breeding with …….

Answer 24

cattle

Question 25

Toba Catastrophe

Answer 25

supervolcanic event in Indonesia 70,000 years ago

Question 26

What did the Toba Catastrophe cause

Answer 26

a bottleneck of the human population

Question 27

After the Toba Catastrophe only ……. were left

Answer 27

10,000