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Genetics

Study Pack

Set 7 Multifactorial Traits

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Question 1

(Multiple Choice)

Free
Mutations and SNPs are different in that

A) SNPs are rare and typically have a large effect on a phenotype, whereas mutations are common and each contribute a small degree to a phenotype.
B) SNPs have been well-studied for a long time, but mutations have only been studied since the sequencing of the human genome.
C) mutations are rare and typically have a large effect on a phenotype, whereas SNPs are common and each may contribute a small degree to a phenotype.
D) mutations affect many DNA bases in a gene whereas SNPs affect only a single base.
E) mutations occur in autosomes and SNPs occur in the sex chromosomes.

Answer

Question 2

(Multiple Choice)

Free
For a multifactorial,polygenic trait,the characteristic shape of the mathematical plot of frequency for each phenotype class is

A) linear, going up.
B) linear, going down.
C) a bell curve.
D) a square curve.
E) an ellipse.

Answer

Question 3

(Multiple Choice)

Free
Polygenic traits are

A) determined by a single gene.
B) determined by more than one gene.
C) phenotypically different in different organisms.
D) associated with many symptoms.
E) determined by genes on the same chromosome.

Answer