evolution

Question 0

according to scientists when did life first appear on earth?

Answer 0

3.5 billion years ago

Question 1

what is the genetic definition of evolution?

Answer 1

the change in allele frequency over time

Question 2

list in chronological order

• eukaryotes
• prokaryotes
• multicellular organisms

Answer 2

1. prokaryote
2. eukaryotes
3. multicellular organisms

Question 3

what evolutionary event does the endosymbiosis hypothesis explain?

Answer 3

development of eukaryotic cells

Question 4

evidence for the endosymbiosis hypothesis?

Answer 4

ribosomes

mitochondria

Question 5

what is a cladogram? how does it classify organisms?

Answer 5

timeline of animals evolution

shows derived characteristics and common ancestors

Question 6

what is a derived character?

Answer 6

a trait that an animal got that made it different from the animals that came before it

Question 7

when two lines come together on a cladogram, what does it represent?

Answer 7

the most recent common ancestor of two + animals

Question 8

what does inheritance of acquired traits mean?

Answer 8

those who got favorable adaptations/traits lived and reproduced

Question 9

what are the four components of the natural selection theory?

Answer 9

1.
2.
3.
4.