BIO1100 Unit II Assessment latest 2018 august

Unit II Assessment

Question 1

What is the cause of about one-third of all cancer deaths?

Question 2

Imagine that a researcher has found an unusual cell that seems to be unable to replicate its DNA. The problem is most likely linked to which phase of the cell cycle?

Question 3

DNA is double stranded and similar in structure to a twisted rope latter composed of nitrogenous bases paired with hydrogen bonds in what order?

Question 4

DNA is often likened to an instruction manual. According to this analogy, the typographical errors that would inevitably result when the DNA "manual" is transcribed would be similar to:

Question 5

What can be concluded about the ability of doctorate-category sperm to help produce children that are smarter than average?

Question 6

Match the following term to its definition.

Alleles

Phenotype

Gametes

Gonads

Genes

Crossing over

Meiosis

Mitosis

Segregation

Quantitative traits

Question 7

Assume the gene for freckles is recessive (f). A woman without freckles has a son that does have freckles. Explain how this would happen.

Question 8

Assume that sickle cell disease only affects homozygous recessive individuals. If one parent is a carrier and the other parent has sickle cell disease, what are the chances of the offspring having sickle cell disease?