# Bio finals

Term
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Which of the following statements about the relationship between genotype and phenotype is true?

A. A given genotype always produces a specific phenotype.
B. Genotypes alone determine all phenotypes.
C. A particular phenotype can be produced by more than one genotype.
D. Dominance makes the study of the genetic basis of natural selection easy.
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Terms in this set (53)
Which of the following statements about the relationship between genotype and phenotype is true?

A. A given genotype always produces a specific phenotype.
B. Genotypes alone determine all phenotypes.
C. A particular phenotype can be produced by more than one genotype.
D. Dominance makes the study of the genetic basis of natural selection easy.
In a population of 200 individuals, 72 are homozygous recessive for the character of eye color (cc). One hundred individuals from this population die from a fatal disease. Thirty-six of the survivors are homozygous recessive. How many heterozygousindividuals are expected in the new population?
A. 16
B. 36
C. 40
D. 48
6. Which of the following is a true statement concerning genetic variation?
A. It must be present in a population before evolution can occur in the population.
B. It is created by the direct action of natural selection.
C. It tends to be reduced by the processes involved when diploid organisms produce gametes.
D. It arises in response to changes in the environment.
24. What must be true of any organ that is described as vestigial?
A. It need be neither homologous nor analogous to some feature in an ancestor.
B. It must be analogous to some feature in an ancestor.
C. It must be homologous and analogous to some feature in an ancestor.
D. It must be homologous to some feature in an ancestor.
27. Birds, snakes, lizards, turtles, and crocodiles are all thought to share a common ancestor and several homologous traits. Assuming that this is true, these groups of animals and their common ancestor would represent
A. a polyphyletic group.
B. a monophyletic group.
C. homoplastic convergence.
D. an outgroup.