Genetic variation in bacterial populations can result from all of the following EXCEPT (2 points) conjugation

meiosis

mutations

transduction
2.
The figure below depicts changes in the DNA content of a recipient cell engaged in conjugation with an Hfr cell. Hfr cell DNA begins entering the cell at Time A. A fragment of the recipient's chromosome is replaced with a homologous fragment from the Hfr cell's DNA.

A line graph shows the amount of DNA present in the recipient cell vs. time. The amount of DNA increases at time A, increasing steadily till it reaches its maximum value just before time C. At time C, the amount of DNA drops significantly, falling back to an amount equal to the starting amount at time A. The amount of DNA content remains constant from time C to D.
© 2012 FLVS

How is the recipient cell different at Time D than it was at Time A? (2 points)

It has a different sequence of base pairs.

It has a greater number of genes.

It has a lower mass of DNA.

It contains bacteriophage DNA.
3.
How does sexual reproduction compare to DNA transfers in prokaryotes? (2 points)
Both increase genetic diversity.
Sexual reproduction results in greater evolutionary change.
DNA transfer in prokaryotes allows for fewer errors and mutations.

I only

I and II

I and III

I, II, and III
4.
Two eukaryotic proteins have one domain in common but are otherwise very different. Which of the following processes is the most likely to have contributed to this similarity? (2 points)

exon shuffling

gene duplication

histone modifications

random point mutations
5.
This figure shows a diagram of genes on human chromosome 16 and the locations of blocks of similar genes on four chromosomes of a mouse:

The genes that are found on human chromosome 16 are found separately on four different chromosomes in a mouse.

The movement of these blocks suggests that over the course of evolution, these sequences have separated and returned to their original positions

chromosomal translocations have moved blocks of DNA sequences to other chromosomes

the DNA sequences within these blocks have become increasingly divergent over evolutionary time

higher mammals have more convergence of gene sequences that are related to each other in function
6.
Describe the three main mechanisms of DNA transfer from one bacterial cell to another and explain what distinguishes each from the others. (5 points)