Chapter
24: The Origin of Species Answers EVEN
2) Adult chimpanzees have heavier brow ridges.
4relative small genetic change can have a
major impact on phenotype.
6) it is not possible to test reproductive
isolation in fossil forms.
8) The two forms are observed to interbreed
successfully where their habitats overlap.
10Gene flow between the two populations is
extensive.
12) gametic incompatibility
14) speciation
16)
They shared a common ancestor recently in evolutionary time.
18) 3
and 5
20) morphological
22) habitat isolation
e 24)
two species of orchids with different floral anatomy
c 26)
two species of meadowlarks with different mating songs
b 28)
two species of pine shed their pollen at different times
30) soils
32)
reinforce postzygotic barriers between horses
and donkeys.
34) III
only
36) the islands are very young in geologic
time.
38) polyploidy.
40)
meiosis.
42) 14.
44) geographic isolation.
46) speciation occurred rapidly in geologic time.
48 A new
species forms most of its unique features as it comes into existence and then
changes little for the duration of its existence.
50) sympatric speciation.
52) ancestral versions of this protein assemblage
were either less functional, or had different functions, than modern
prokaryotic flagella.
54) a change in a regulatory gene, which has a
major and adaptive impact on morphology
56) in particular environments, similar
adaptations can be beneficial in more than one species.