BIO 1500 Final Exam Questions and
Answers 100% Pass
Which of the following is the best modern definition of evolution - ✔✔change in allele
frequencies in population over time
Which of the following is not a correct version of one of Darwin's four postulates -
✔✔In each generation, only as many offspring that can survive are provided
Evolution in a population of island finches can be caused by the following agent -
✔✔All of the above
Biological fitness is best defined as - ✔✔relative the ability of an individual to produce
offspring that survive and reproduce
Cotton-topped tamarins are small primates with tuffs of long white hair on their heads.
While studying these creatures, you notice that males with longer hair get more
opportunities to mate and father more offspring. You believe that having longer hair is
adaptive to these males. To prove that this is an adaptation, you next should -
✔✔determine if hair length is heritable
100% Pass Guarantee Sophia Bennett, All Rights Reserved © 2025 1
, Which of the following statements describes natural selection best? - ✔✔Individuals
with the most favorable alleles survive and reproduce
Speciation occurs when populations become genetically isolated and then diverge due
to evolutionary mechanisms. Which of the following could be a dispersal event that
would lead to genetic isolation for populations in that habitat - ✔✔Some insects get
blown in a storm to a new mountain range, where they lay eggs.
Genetic drift occurs in a population. Which of the following statements might be true -
✔✔Any of the statements can be true
Genetic variation - ✔✔must be present in a population before natural selection can act
upon the population
Which of the following is the least likely to result in the formation of new species -
✔✔gene flow
Most Swiss starlings produce four to five eggs in each clutch. Starlings producing fewer
or more than this have reduced fitness. Which of the following terms best describes this
situation - ✔✔Stabilizing selection
In seed cracker finches from Cameron, small- and large-billed birds specialize in
cracking soft and hard seeds, respectively. If long-term climatic change resulted in all
seeds becoming hard, what type of selection would then operate on the finch
population - ✔✔Directional selection
100% Pass Guarantee Sophia Bennett, All Rights Reserved © 2025 2
Answers 100% Pass
Which of the following is the best modern definition of evolution - ✔✔change in allele
frequencies in population over time
Which of the following is not a correct version of one of Darwin's four postulates -
✔✔In each generation, only as many offspring that can survive are provided
Evolution in a population of island finches can be caused by the following agent -
✔✔All of the above
Biological fitness is best defined as - ✔✔relative the ability of an individual to produce
offspring that survive and reproduce
Cotton-topped tamarins are small primates with tuffs of long white hair on their heads.
While studying these creatures, you notice that males with longer hair get more
opportunities to mate and father more offspring. You believe that having longer hair is
adaptive to these males. To prove that this is an adaptation, you next should -
✔✔determine if hair length is heritable
100% Pass Guarantee Sophia Bennett, All Rights Reserved © 2025 1
, Which of the following statements describes natural selection best? - ✔✔Individuals
with the most favorable alleles survive and reproduce
Speciation occurs when populations become genetically isolated and then diverge due
to evolutionary mechanisms. Which of the following could be a dispersal event that
would lead to genetic isolation for populations in that habitat - ✔✔Some insects get
blown in a storm to a new mountain range, where they lay eggs.
Genetic drift occurs in a population. Which of the following statements might be true -
✔✔Any of the statements can be true
Genetic variation - ✔✔must be present in a population before natural selection can act
upon the population
Which of the following is the least likely to result in the formation of new species -
✔✔gene flow
Most Swiss starlings produce four to five eggs in each clutch. Starlings producing fewer
or more than this have reduced fitness. Which of the following terms best describes this
situation - ✔✔Stabilizing selection
In seed cracker finches from Cameron, small- and large-billed birds specialize in
cracking soft and hard seeds, respectively. If long-term climatic change resulted in all
seeds becoming hard, what type of selection would then operate on the finch
population - ✔✔Directional selection
100% Pass Guarantee Sophia Bennett, All Rights Reserved © 2025 2
