Lab 1

Question 1

structurally complex

benthic invertebrates

Answer 1

shallow lake

Question 2

structurally simple

plankton

Answer 2

deep lake

Question 3

species used to study a particular question easily

Answer 3

model organism

Question 4

loss of stickleback pelvic spines is similar to the loss of which body parts in some four legged vertebrates

Answer 4

back legs

Question 5

why is the stickleback a model organism for studies in evolution

Answer 5

small, can breed in lab, reproduce rapidly, found in n hemisphere

Question 6

name 2 other vertebrates whose evolutionary histories include the loss of hind limbs

Answer 6

snake, wahle, manatee

Question 7

which gene is the cause for the loss of pelvic spine?

Answer 7

pitx1 gene

Question 8

conditions of natural selection

Answer 8

variation of a population, overpopulation, competition, survivial to reproducde

Question 9

life cycle of stickleback

Answer 9

born in freshwater, lives in marine, reproduce in freshwater

Question 10

what shows if data is significant

Answer 10

chi square

Question 11

pitx1 shows a

Answer 11

left bias