- Which of the following can facilitate a change in a population?
Your answer:
non-random mating
migrations
natural selection
all of these
- The Amish illustrate which effect?
Your answer:
founder effect
bottleneck effect
genetic drift
both a & c
- The graph is illustrating what type of selection?
Your answer:
disruptive
stabilizing
selective
directional
- The most common cause of extinction is:
Your answer:
habitat change
predators
parasites
competition
- In a population of woolybeasts, individuals with long snouts tend to survive better on an island that has burrowing termites. Over time, the woolybeast population consists of individuals with extremely long snouts. This is an example of:
Your answer:
stabilizing selection
directional selection
disruptional selection
none of these
- Cheetah populations are genetically similar due to:
Your answer:
direction selection
bottleneck effect
migration
random mating
- A characteristic that helps an organism survive and reproduce is called a(n):
Your answer:
gene pool
symbiosis
specialization
adaptation
- A population of birds is blown by a storm to an island off the mainland. The island has very few trees, and the bird population on the island develops new nesting behaviors. Mainland birds nest in trees, island birds nest on the ground. After a long period of time, the island birds are reunited with the mainland birds, it is observed that the two populations can no longer interbreed. This is an example of:
Your answer:
allopatric speciation
genetic drift
sympatric speciation
both A & B
- What hypothesis suggests that species stay the same for a long period of time, then change abruptly due to mutations in key genes?
Your answer:
punctuated equlibrium
founder effect
allopatric speciation
"good genes" hypothesis
- Female guppies tend to choose brightly colored mates. Over time, the populaton of guppies becomes more colorful. This is an example of:
Your answer:
kin selection
sexual selection
natural selection
gamete incompatibility
- Members of different species do not normally interbreed due to:
Your answer:
mechanical incompatibility
differing courtship rituals
breeding times vary
all of these
- Speciation occurs when
Your answer:
two populations become geographically isolated
one population becomes a different population
a gene mutation occurs
enough differences accumulate between two populations that they can no longer interbreed
- The picture illustrates:
Your answer:
sympatric speciation
divergent speciation
phyletic speciation
allopatric speciation
- In pools where there are many aggressive predators, male guppy coloration tends to be:
Your answer:
drab
bright
extremely bright
equal populations of drab and extremely bright
- Hybrids of two species can be:
Your answer:
a new species
sterile
the same species as one of the parents
none of these