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Flashcards in Nov 22 Deck (16):
1

How are apes different from old world monkeys?

Larger brains, no tail, posture, hips, ankles, arms, shoulders

2

How are great apes different from old world monkey?

elongated skull, enlarged brow ridge, shorter/stouter canines, fusion of some wrist bones, larger ovaries and mammaries, reduced hairiness

3

Humans and ___ are one another’s closest relatives among extant primates

chimps

4

Humans and chimpanzees shared a common ancestor ___ mya

3.5

5

What is chromosome # of humans and apes?

humans-->n=23
apes-->n=24

6

Genes that are substantially different btw humans and chimps include those associated with:

Smell
Hearing
Protein metabolism
Bone growth

7

How can gene rearrangements modify phenotype?
a) not at all
b) changes gene expression
c) recruits different regulators
d) not sure

b) changes gene expression

8

What does the Fox01A gene in apes do?

transcription factor that activates genes responsible for brain and cell development

9

What is the oldest human ancestor?

Proconsul

10

What were the physical characteristics of Proconsul?

flexible back
quadrupedal posture w/ palms-down
tail-less
no vertebrae

11

Early hominins had what origin?

East African

12

What hominin had fully opposable thumbs

A. ramidus

13

What is mosaic evolution?

derived and ancestral features

14

What hominin ancestor had forward-projecting jaw and U-shaped palate, definitely bipedal, includes 'Lucy'

A. afarensis

15

What hominin ancestor made stone tools?

australopithecines

16

What came before humans?

Homo erectus