Each of the major hypotheses proposed to explain why sexual reproduction is more widespread than asexual reproduction ultimately base their explanations on the adaptive benefit of (select all correct choices):
A. forming pair bonds.
B. forming genetically distinct offspring.
C. forming large populations.
D. forming relatively slow-growing
populations.
E. reducing mutation rates.
B
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Lysogeny is unique to bacteriophages; similar relationships have not been found among the animal viruses
Indicate whether the statement is true or false.
Of the 20 standard amino acids, only ___________ is not optically active. The reason is that its side chain ___________.
A) alanine; is a simple methyl group B) glycine; is a hydrogen atom C) glycine; is unbranched D) lysine; contains only nitrogen E) proline; forms a covalent bond with the amino group
Groups of cells of the same structure and function are organized into ________.
Fill in the blank(s) with the appropriate word(s).
What is the function of the cellular structure indicated by "n" in Figure 3.3?
A. ATP synthesis B. protein synthesis C. synthesis of lipids D. packaging of materials for export E. cell movement and mitosis