If many genes from two species differ in about 5% of their bases and substitutions occur at an estimated rate of 5% per 1 million years, then about million years have passed since the two species diverged.
A. 10
B. 1
C. 50
D. 5
E. 20
B. 1
Biology & Microbiology
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In transduction, two prokaryotic cells of different mating types come together and genetic material is
transferred from one cell to another. Indicate whether the statement is true or false.
Biology & Microbiology
Life-threatening aneurisms are most likely to occur in
A) veins. B) venules. C) capillaries. D) arterioles. E) arteries.
Biology & Microbiology
Which term refers to animals that have a fluid-filled cavity that separates the gut from the muscles of the body wall and which is completely lined by the peritoneum?
a. coelomate b. pseudocoelomate c. indeterminate d. mesenteries
Biology & Microbiology
In eukaryotic DNA methylation, methyl groups are usually added to which molecule?
A. Guanine B. Thymine C. Adenine D. Cytosine E. Deoxyribose
Biology & Microbiology