B male c female d disorder feedbackcorrect question

B. male

C. female

D. disorder
Feedback:Correct
Question 15 of 40
2.5/ 2.5 Points
________ unwinds the helix during replication.

A. DNA primase

B. DNA ligase

C. DNA helicase

D. DNA polymerase I

E. DNA gyrase

Feedback:Correct
Question 16 of 40
2.5/ 2.5 Points
The allele for widows peak (H) is dominant for the allele for no widows peak (h). At a different gene
locus, the allele for hitchhikers thumb (D) is dominant to the allele for non-hitchhikers thumb (d). A man
is heterozygote for the traits and marries a woman who has no widows peak and is heterozygote for
hitchhikers thumb. What is the man’s genotype?
Question 17 of 40
2.5/ 2.5 Points
If genes are completely linked, all the offspring will be _________.

A. dominant

B. recombinants

C. hybrids

D. parental

E. recessive
Feedback:Correct
Question 18 of 40
2.5/ 2.5 Points
A child contains what proportion of their parent’s genetic makeup?


D. 33:67
Feedback:Correct
Question 19 of 40
2.5/ 2.5 Points
Why is working with linked genes not simple?

A. potential of crossing over in meiosis I

B. potential of independent assortment in meiosis I

C. they reside on different chromosomes

D. one gene often masks the other gene
Feedback:Learning Objective: Explain the effect of linkage and recombination on gamete genotypes
Question 20 of 40
0.0/ 2.5 Points
If a human has straight hair or curly hair they are homozygous. An individual with curly hair is
heterozygte. This is an example of what type of genetic expression?

Feedback:Incorrect-
Learning Objective Text: Identify non-Mendelian inheritance patterns such as incomplete dominance,
codominance, recessive lethals, multiple alleles, and sex linkage
Question 21 of 40
2.5/ 2.5 Points
A mutation changing an alanine to a glycine would likely have little effect on the protein function since
they are both small, ________, amino acids.


D. charged

E. polar
Feedback:Correct
Question 22 of 40
2.5/ 2.5 Points
A karyogram that contains 23 pairs of chromosomes with a different pair for the 23rd pair would
describe a(n)
Feedback:Correct
Question 23 of 40
2.5/ 2.5 Points

Your labmate’s ligation reaction didn’t work. The regular ATP had run out, so he fueled the reaction with
dATP from the PCR kit. What advice can you give him?

A. Suggest trying one of the other nucleotides from the PCR kit to drive the ligation
reaction.