AP BIO FR CH. 51-53

Question 1

1 characteristic of the population that may have lead to its decline

Answer 1

Not enough young snakes to reproduce

Disease

Question 2

How the outside males helped the species stop declining

Answer 2

increased genetic diversity

Question 3

How does the data support the statement that there are resources in the environment

Answer 3

The population grows and if there were not enough resources, it would not

Question 4

What do photoreceptors, brain, and motor neurons do in responding to light

Answer 4

Photo: Detect the light/dark stimulus and transmits a signal
Brain: Processes info
Motor: transmits signal from brain to muscle

Question 5

Describe the activity period of the mice

Answer 5

Active ONLY in the dark period

Question 6

Difference in the daily pattern of activities

Answer 6

The pattern of activity changes each day because without light stimulus, active and inactive periods are only determined by circadian rhythms

Question 7

Predict the observed pattern in L12:D12 and DD

Answer 7

L12: Normal rhythm, similar to wild mice L12
DD: Random activity pattern throughout the 24 hr period

Question 8

Predator-Prey relationships

Answer 8

Selective Advantage: there is selection for individuals active at night
Reproductive success: mice selected by prey less likely to reproduce