Module 16

Question 1

Evolution

Answer 1

The gradual change in a species over time

Question 2

Natural Selection

Answer 2

the process through which populations of living organisms adapt and change to the environment

Question 3

Water boatman

Answer 3

3 colors; black,white and grey; dark ones were eaten

Question 4

Positive frequency-dependent selection

Answer 4

favored more common phenotypes

Question 5

Oscillating selection

Answer 5

the selection that favors one phenotype at one time, then another at another time.

Question 6

Medium ground finch

Answer 6

able to eat plants with large seeds in droughts and small seeds in wetness

Question 7

heterozygote advantage

Answer 7

favors individuals with both alleles of a specific trait

Question 8

sickle cell anemia

Answer 8

is caused by a base subsitituion mutations which causes the RBC to turn into a sickle shape

Question 9

Malaria

Answer 9

a disease that you can get from mosquitos infected by it

Question 10

Disruptive Selections

Answer 10

eliminates intermediate phenotypes

Question 11

African black-bellied seed crackers

Answer 11

either have large or small beaks,no in between(medium)

Question 12

Directional selection

Answer 12

eliminates extreme in phenotypes

Question 13

stabilizing selection

Answer 13

eliminates both extremes and favors the intermediate

Question 14

Human infants

Answer 14

example of stabilizing selection (baby dies if underweight and dies if overweight)

Question 15

Guppies

Answer 15

type of fish that a group of biologists studied

Question 16

Killfish

Answer 16

was in the upper pool and did not feed on the guppies

Question 17

Pike cichilid

Answer 17

was in the lower pool and preyed on guppies

Question 18

Predation

Answer 18

the preying of one animal on another