3. What is the expected effect of inbreeding on the frequency of genotypes in a
population?
A. Heterozygotes are less frequent than in a population in Hardy-Weinberg
equilibrium
B. Heterozygotes are more frequent than in a population in Hardy-Weinberg
equilibrium
C. Homozygous individuals will be lost, and only heterozygous individuals will remain
D. There is no predictable effect in any direction
Give this one a try later!
A. Heterozygotes are less frequent than in a population in Hardy-Weinberg
equilibrium
4. Which of the following is a potential cause of incomplete penetrance or variable
expressivity of a particular mutation?
, A. Environmental influences
B. The influence of other interacting genes
C. Random variation in gene expression
D. A and B
E. A, B, & C
Give this one a try later!
E. A, B, & C
8. Which statement is INCORRECT about genome-wide association studies (GWAS)?
A. GWAS studies involve scoring hundreds of thousands of single nucleotide
polymorphisms (SNPs) in tens of thousands of individuals B. GWAS studies are
designed to find genes associated with quantitative trait variation
C. GWAS studies do not require a series of controlled crosses among strains of a
model organism
D. A Manhattan plot summarizing the results of a GWAS study shows chromosome
position on the X-axis and mean trait value differences between SNP alleles on the Y-
axis.
Give this one a try later!
D. A Manhattan plot summarizing the results of a GWAS study shows
chromosome position on the X-axis and mean trait value differences
between SNP alleles on the Y-axis
9. Which statement is INCORRECT about linkage disequilibrium (LD)? A. SNPs that are
discovered in GWAS studies may not be responsible for the phenotype, but rather in
LD with the functional SNP
B. LD arises between new mutations and alleles of other loci located on the same
chromosome
population?
A. Heterozygotes are less frequent than in a population in Hardy-Weinberg
equilibrium
B. Heterozygotes are more frequent than in a population in Hardy-Weinberg
equilibrium
C. Homozygous individuals will be lost, and only heterozygous individuals will remain
D. There is no predictable effect in any direction
Give this one a try later!
A. Heterozygotes are less frequent than in a population in Hardy-Weinberg
equilibrium
4. Which of the following is a potential cause of incomplete penetrance or variable
expressivity of a particular mutation?
, A. Environmental influences
B. The influence of other interacting genes
C. Random variation in gene expression
D. A and B
E. A, B, & C
Give this one a try later!
E. A, B, & C
8. Which statement is INCORRECT about genome-wide association studies (GWAS)?
A. GWAS studies involve scoring hundreds of thousands of single nucleotide
polymorphisms (SNPs) in tens of thousands of individuals B. GWAS studies are
designed to find genes associated with quantitative trait variation
C. GWAS studies do not require a series of controlled crosses among strains of a
model organism
D. A Manhattan plot summarizing the results of a GWAS study shows chromosome
position on the X-axis and mean trait value differences between SNP alleles on the Y-
axis.
Give this one a try later!
D. A Manhattan plot summarizing the results of a GWAS study shows
chromosome position on the X-axis and mean trait value differences
between SNP alleles on the Y-axis
9. Which statement is INCORRECT about linkage disequilibrium (LD)? A. SNPs that are
discovered in GWAS studies may not be responsible for the phenotype, but rather in
LD with the functional SNP
B. LD arises between new mutations and alleles of other loci located on the same
chromosome
