Lecture 4

Question 1

Cuvier hypothesized?

Answer 1

catastrophe —> local extinction –> presence of fossils in the stratum

Question 2

Lamarck hypothesized?

Answer 2

Species change over time due to inheritance of characteristics

Question 3

Descent?

Answer 3

Similarity due to common ancestry

Question 4

Modification?

Answer 4

descendants accumulate differences (mutation, recombination, natural selection)

Question 5

Descent with modification creates?

Answer 5

Diversity

Question 6

Observation 1?

Answer 6

organisms produce many more offspring than survive to reproduce themselves

Question 7

Observation 2?

Answer 7

Most populations are fairly stable

Question 8

Observation 3?

Answer 8

Competition is created because resource is limited

Question 9

Observation 4?

Answer 9

Variation among individuals within species

Question 10

Observation 5?

Answer 10

Some variation is heritable

Question 11

Inferences about Obs 5?

Answer 11

Heritable variation can provide advantages and those with advantages are more likely to leave more offspring.

Question 12

Descent with modification?

Answer 12

Adaptive changes over many generations

Question 13

Natural selection gives rise to?

Answer 13

Adaptations

Question 14

True or false…individuals evolve over time

Answer 14

FALSE.. populations evolve over time

Question 15

What does natural selection act on?

Answer 15

Existing variation

Question 16

Context dependant?

Answer 16

No tendency towards perfection