Two eukaryotic proteins have one domain in common but are otherwise very different. Which of the following processes is most likely to have contributed to this similarity?
a. Gene duplication
b. Alternative splicing
c. Exon shuffling
d. Random point mutations

Bioinformatics includes all of the following except

a. Using computer programs to align DNA sequences.

b. Using DNA technology to combine DNA from two different sources in a test tube.

c. Developing computer-based tools for genome analysis.

d. Using mathematical tools to make sense of biological systems.

Anton van Leeuwenhoek made an important contribution to the development of the cell theory. How?

a. He articulated that all organisms are made of cells.

b. He articulated that all cells come from preexisting cells.

c. He invented the first microscope and saw the first cell.

d. He invented more powerful microscopes and was the first to describe the diversity of cells.

Homeotic genes

a. Encode transcription factors that control the expression of genes responsible for specific anatomical structures.

b. Are found only in Drosophila and other arthropods.

c. Are the only genes that contain the homeobox domain.

d. Encode proteins that form anatomical structures in the fly.

What does it mean to say that experimental conditions are controlled? Select True or False for each statement.

T/F The test groups consist of the same individuals.

T/F The null hypothesis is correct.

T/F There is no difference in outcome between the control and experimental treatment.

T/F All physical conditions except for one are identical for all groups tested.

A homeotic gene does which of the following?

a. It serves as the ultimate control for prokaryotic operons.

b. It regulates the expression of groups of other genes during development.

c. It represses the histone proteins in eukaryotic chromosomes.

d. It helps splice mRNA after transcription.

What is a homeotic mutant?

a. An individual with a structure located in the wrong place

b. An individual with an abnormal head-to-tail axis

c. An individual that is missing segments

d. An individual with double the normal number of structures

The human genome size is 3 billion base pairs, and the size of the baker's yeast genome, a single-celled organism, is 12 million base pairs. Therefore, the predicted genome size for another single-celled organism, an amoeba,

a. Is about the size of the human genome

b. Is about the size of the yeast genome

c. Is somewhere between the sizes of the yeast and human genomes

d. Cannot be predicted with any certainty