lecture 19b

Question 1

closely related species share

Answer 1

many characteristics

Question 2

distantly related species share

Answer 2

less characteristics

Question 3

phylogenetic tree

Answer 3

graphical representation of a hypothesis
(sequence of speciation events)

Question 4

hypothesis(biology) is an evolutionary group of..

Answer 4

taxa

Question 5

phylogeny

Answer 5

evolutionary group of taxa estimated from data

Question 6

when does speciation begin?

Answer 6

when gene flow stops
(mating and reproduction)

Question 7

If a Large population with a common gene pool goes through a long period of isolation from each other what would happen?

Answer 7

*the two populations woukdnt be able to interbreed anymore

*they would become two different species

Question 8

eg: the outgrouo can be seen as a

Answer 8

friend who’s in the family photo who’s not related to anyone

Question 9

if a trait is shared between an out group and ingroup its most likely..

Answer 9

an ancestral trait

Question 10

if a trait is found in the whole class BUT the outgroup it is..

Answer 10

a shared derived trait

Question 11

a shared derived trait is used to define

Answer 11

our monophyletic groups

Question 12

what is or is not a shared derived trait depends on your

Answer 12

reference group

Question 13

living organisms are the products of

Answer 13

billions of years of evolution

Question 14

all species are a mixture of

Answer 14

ancestral and derived traits

Question 15

a nucleus can be seen as what trait for humans and eukaryotes?

Answer 15

ancestral -human
derived- eukaryotic