The ________ is the total number of alleles of all the gene loci in all the members of a population.

A) genetic drift
B) gene flow
C) gene pool
D) adaptive radiation
E) community

"Sticky ends" are:

A) the single-stranded ends of a DNA segment created by some restriction enzymes
B) a problem in recombinant DNA technology because they form loops of single-stranded DNA
C) double-stranded ends of a DNA segment created by some restriction enzymes
D) sites of the origin of replication in prokaryotes
E) sugar molecules that are bound to the ends of a DNA fragment

Viruses are composed primarily of proteins and nucleic acids. Which of the following elements could be used to track the fate of viral proteins to determine if they entered the cell?

A) Phosphate because proteins contain phosphate, but nucleic acids do not
B) Sulfur because proteins contain sulfur, but nucleic acids do not
C) Nitrogen because proteins contain nitrogen, but nucleic acids do not
D) Oxygen because proteins contain oxygen, but nucleic acids do not

Sexual selection can shape which of the follow aspects of an organism?

A) visible weaponry on males
B) how fast embryos grow in the uterus
C) the shape of mammal limbs
D) a and b
E) a, b, and c

The tightness of the ligaments at each joint is the only limiting factor of movement at that joint.

Which protist group contains the organism Trypanosoma, a colorless parasite that can cause African sleeping sickness?

A) Unikonts
B) Excavates
C) Rhizarians
D) Archaeplastids
E) Chromalveolates