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BSC STUDY EXAM QUESTIONS CORRECTLY ANSWERED. For which one of the following observations were both Lamarck's hypothesis and Darwin's hypothesis in complete agreement? - CORRECT ANSWER Gradual evolutionary change explains why organisms are well-suited to their environments. True or false? ...

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  • August 4, 2024
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  • 2024/2025
  • Exam (elaborations)
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  • bsc study exam questions correctly answ

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BSC 2011 22-25 STUDY EXAM
QUESTIONS CORRECTLY ANSWERED.

For which one of the following observations were both Lamarck's hypothesis and Darwin's hypothesis in
complete agreement? - CORRECT ANSWER Gradual evolutionary change explains why organisms are
well-suited

to their environments.



True or false? It would be difficult to assess whether the drug-susceptible or drug-resistant phenotype in
a population of Mycobacterium tuberculosis was more fit in an environment without antibiotics. -
CORRECT ANSWER TRUE



Of the following anatomical structures, which is homologous to the bones in the wing of a bird? -
CORRECT ANSWER bones in the flipper of a whale



What are adaptations? - CORRECT ANSWER inherited characteristics of organisms that enhance their
survival



Which of the following statements about natural selection is true?



Natural selection is a process whereby genes are selected randomly for preservation in the next
generation.

Natural selection occurs in opposition to evolution.

Natural selection favors individuals that reproduce more than others.

Natural selection can be used by farmers to generate organisms with desirable traits. - CORRECT
ANSWER Natural selection favors individuals that reproduce more than others.



Which term describes a trait that increases an individual's ability to survive in a particular environment?
- CORRECT ANSWER Adaptation

, Which term describes the ability of a trait to be passed on to offspring?

Adaptation

Heritability

Evolution

Fitness - CORRECT ANSWER Heritability



Which of the following organisms could be produced by artificial selection?

A rabbit that is housebroken.

A dog that serves as the "eyes" for a blind individual.

A chimpanzee that communicates through sign language.

A cow that produces a large quantity of milk. - CORRECT ANSWER A cow that produces a large quantity
of milk.



Homozygotes with two sickle-cell alleles are selected against because of mortality. However,
heterozygotes for sickle-cell allele experience little effects of sickle allele and are more likely to survive
malaria. The net effect of this exposure produced evolutionary change in areas where malaria is
endemic by ________.



causing sickle-cell allele

distortion of red blood cells

increasing sickle-cell allele frequency

increasing the number of infected mosquitoes - CORRECT ANSWER increasing sickle-cell allele frequency



In a Hardy-Weinberg population with two alleles, A and a, that are in equilibrium, the frequency of allele
a is 0.1. What is the frequency of individuals with AA genotype?



0.81

0.32

0.20

0.42 - CORRECT ANSWER 0.81

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