1.Based on current fossil evidence:
Select one:
a. whales were likely fully aquatic before they evolved peg-like teeth or baleen
b. evolution of baleen forced whales to become fully aquatic
d. a and c are correct
e. b and c are correct
2.Evolution occurs when:
Select one:
a. individuals in a population change in response to the environment
b. the average value of trait in a population changes from one generation to the next
d. Neither a or b is correct
3.New mutations:
Select one:
b. are necessary for natural selection to cause evolutionary change
c. are rare in a population
d. a and b are correct
e. all are correct
4.One important feature that links extinct organisms such as Pakicetus and Indohyus to cetaceans
is:
Select one:
a. the shape of a bone in the middle ear
c. the lack of hindlegs
d. peg-like teeth
5.The fluke of a whale and the fluke of a shark:
Select one:
a. are homologous traits
b. arose through convergent evolution
c. are the result of natural selection
d. b and c are correct
Solution
1.(b)evolution of baleen forced whales to become fully aquatic.
2. (b) evolution occurs when 1. Organisms produce more offspring than actually survive.,2.
Every organism must struggle to survive.,3. There is variation within a species.,4. Some
variations allow members of a species to survive and reproduce better than others.,5. Organisms
that survive and reproduce pass their traits to their offspring, and the helpful traits gradually
appear in more and more of the population.
3. (e) mutations are random with respect to their effects on fitness, necessary for natural selection
to cause evolutionary change and are rare in a population.
4..
1.Based on current fossil evidenceSelect onea. whales were lik.pdf
1. 1.Based on current fossil evidence:
Select one:
a. whales were likely fully aquatic before they evolved peg-like teeth or baleen
b. evolution of baleen forced whales to become fully aquatic
d. a and c are correct
e. b and c are correct
2.Evolution occurs when:
Select one:
a. individuals in a population change in response to the environment
b. the average value of trait in a population changes from one generation to the next
d. Neither a or b is correct
3.New mutations:
Select one:
b. are necessary for natural selection to cause evolutionary change
c. are rare in a population
d. a and b are correct
e. all are correct
4.One important feature that links extinct organisms such as Pakicetus and Indohyus to cetaceans
is:
Select one:
a. the shape of a bone in the middle ear
c. the lack of hindlegs
d. peg-like teeth
5.The fluke of a whale and the fluke of a shark:
Select one:
a. are homologous traits
b. arose through convergent evolution
c. are the result of natural selection
d. b and c are correct
Solution
1.(b)evolution of baleen forced whales to become fully aquatic.
2. (b) evolution occurs when 1. Organisms produce more offspring than actually survive.,2.
Every organism must struggle to survive.,3. There is variation within a species.,4. Some
2. variations allow members of a species to survive and reproduce better than others.,5. Organisms
that survive and reproduce pass their traits to their offspring, and the helpful traits gradually
appear in more and more of the population.
3. (e) mutations are random with respect to their effects on fitness, necessary for natural selection
to cause evolutionary change and are rare in a population.
4.
