UNIT 4 - AOS 2 - CH 9

Question 1

Structural Morphology

Answer 1

“Comparing structures, including homologous, Analogous and vestigial”.
(to identify relatedness)

Question 2

Molecular Homology

Answer 2

“Comparing DNA and amino acids”
(To identify relatedness”

Question 3

Relatedness

Answer 3

“How recently species split from a common ancestor”

Question 4

Homologous structures

Answer 4

“Structures of organisms that have evolved from a common ancestor (= divergent evolution) to show similar structure but different function”.

Question 5

Analogous structures

Answer 5

“Structures of organisms that have evolved from similar selective pressures (= convergent evolution) to show different structures but similar function”

Question 6

Vestigial structure

Answer 6

“Non-functional remnants of structures that were functional in ancestral species”