adaptation

Question 1

null vs alternative hypothesis

Answer 1

null-has no effect, same as to begin with

alternative-supports prediction

Question 2

heritable triat

Answer 2

trait that increasees bio fitness. traits that are passed down

Question 3

bio fitness

Answer 3

ability to produce viable offspirng (most children)

Question 4

3 types of adaptations

Answer 4

1. structural (appearance)
   2.physiological (function)
2. behaivour (activities)

Question 5

jean baptists lamarck

Answer 5

said that changes occur in individuals eg)giraffe extending neck and getting longer

changed overtime

Question 6

darwins theory

Answer 6

changes do not occur in individuals. heritable characteristics dont change in natural selection

Question 7

natural selection needs (3)

Answer 7

1.heritable trait
2.variation
3. fitness conseqeunce

Question 8

4 constraints of adaptations

Answer 8

1. compromise
2. sonstrained by histroy (ancestral traits)
3. enviornments often change
   4.natural selection acts on existing variation

Question 9

is variation pre-existing

Answer 9

no occurs due to mutations, mating, dispersal etc.