Evolution#2

Question 1

Evoluation

Answer 1

changes in population gene pool

Question 2

gene pool

Answer 2

all genes in population

Question 3

agent of change (gene pool):

Answer 3

natural selection, mutations

Question 4

benefical mutations

Answer 4

make organisms better fit (human mutation help others survive plague, small pox and aids)

Question 5

sexual reproduction

Answer 5

result in genetic variation, major change agent in eukaryotes and diploid

Question 6

mutation

Answer 6

major change in prokaryotes

Question 7

eukaryotes and diploid

Answer 7

in meiosis, genetic recompination and indepedent assortment, chromosome form tetrad and crossing over

Question 8

gene flow

Answer 8

changes in population gene pool due to migration (if one population migrate to another populaion, change gene variability (more genes for good or bad or less, dependent on which population migrate)

Question 9

genetic drift

Answer 9

chanages in population gene pool due to chance

Question 10

bottle neck

Answer 10

all indivudals wiped out ut few survive: lose genetic variability, indivudals who escaped reproduce and create new population

Question 11

causes of bottle neck

Answer 11

causes: drought, natural disater,

Question 12

example of bottle neck

Answer 12

buffalo (we wipe out), pandas, condors (la), elephant seal (san franciso, channel isalnds)

Question 13

elepahtn seal

Answer 13

1890s hunted, 20 left

Question 14

crash

Answer 14

keeps going and goign and then crash

Question 15

founder effect

Answer 15

by chance, few people get isolated from main population and get reolcated by changing = founding population

Question 16

gapalagos islands (founder effect)

Answer 16

darwin found info there, land and water

Question 17

iguanas

Answer 17

land and water iguanas descended form green iguanas (south america0, green got to isladns

Question 18

tortoise

Answer 18

ancestor to giant tortoise

Question 19

finch

Answer 19

blown by storms of finches, blue black finch

Question 20

rafting theory

Answer 20

ancestor fall on mats to sea

Question 21

amish

Answer 21

only few hundred move to penn, ohio= founding population, closed population, few leaved

Question 22

natural seelction

Answer 22

major genetic variation

Question 23

genetic variation

Answer 23

passed to geneartion to generation

Question 24

overprodution

Answer 24

humming bires (only two likely to survive)

Question 25

adventageous

Answer 25

adapt to envrionement

Question 26

slight changes

Answer 26

lead to heavier changes

Question 27

1.

Answer 27

over popuatlion

Question 28

heritable variation

Answer 28

all indivudals have slight difference, one generation to next

Question 29

competition for limited resources

Answer 29

mates, food, etc

Question 30

survival of fitest

Answer 30

variation mroe benefitical than others, wing difference, euffiicently shape of bill, better able to compete and surive

Question 31

5. differencal reproductive success

Answer 31

if beneficial varion: put variaotn into offspring

Question 32

africaner

Answer 32

descended from end dutch esettlers, today susally disaes high rae of huntings, evidence for founders effect