Chapter
24: The Origin of Species Answers
1
evolution as it occurs on a large scale
2) Adult chimpanzees have heavier brow ridges.
3) the variation in
growth rate of various parts of the body.
4relative
small genetic change can have a major impact on phenotype.
5) small jaws.
6) it is not possible
to test reproductive isolation in fossil forms.
7) species.
8) The two
forms are observed to interbreed successfully where their habitats
overlap.
9) behavioral isolation
10Gene flow
between the two populations is extensive.
11) 28.
12) gametic
incompatibility
13a change
in a developmental gene or in its regulation that altered the spatial
organization of body parts.
14)
speciation
15) I and
III
16) They shared a
common ancestor recently in evolutionary time.
17) biological
18) 3 and 5
19) ecological
20)
morphological
21)
morphological
22) habitat isolation
23)
reproductive isolation
Use
the following options to answer the following questions. For each description
of reproductive isolation, select the option that best describes it. Options
may be used once, more than once, or not at all.
A. gametic
B. temporal
C. behavioral
D. habitat
E. mechanical
e 24) two species of orchids with different floral
anatomy
b 25) two species of trout that breed in different
seasons
c 26) two species of meadowlarks with different
mating songs
d 27) two species of garter snakes live in the same
region, but one lives in water and the other lives on land
b 28) two species of pine shed their pollen at
different times
29)
their own species, but not of other species
30) soils
31) the
postzygotic barrier called hybrid inviability
32)
reinforce postzygotic barriers between horses and donkeys.
33) asexual organisms.
34) III only
35)
adaptive radiation and allopatric speciation.
36) the islands are
very young in geologic time.
37) 1, 3, and 4
38) polyploidy.
39) reproductive isolation from one
another
40)
meiosis.
41) It
can overcome hybrid sterility.
42) 14.
43) 42.
44) geographic
isolation.
45) species selection
46) speciation occurred
rapidly in geologic time.
47) perform live birth is an example of
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.
49) occurs via anagenesis and cladogenesis, but only the latter
increases biodiversity.
50) sympatric
speciation.
51) evolution of modern humans, Homo sapiens, from australopithecine ancestors
52) ancestral versions of this protein assemblage
were either less functional, or had different functions, than modern
prokaryotic flagella.
53) They
are homologous organs.
54) a change in a regulatory gene, which has a major and
adaptive impact on morphology
55) changes in homeotic genes.
56) in particular
environments, similar adaptations can be beneficial in more than one species.