Apple maggot flies appear to be two separate races. What makes these races different?
A) They look different.
B) They eat different foods.
C) They have different allele frequencies.
D) They mate at different times.
C
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In analyzing dihybrid data, Mendel discovered not only that these alleles separate from each other when examining one trait, but also that the alleles of a second trait will separate from each other without regard to those of the first trait. This observation was the basis of Mendel's law of ________.
Fill in the blank(s) with the appropriate word(s).
Amie's, Leibovitz-Emory, and Stuart's are all types of:
a. cell lines. b. cell culture media. c. automated systems. d. transport media.
Based on the graph in Figure 45-1, which of the following statements is true?
a. The primary response to the initial injection subsided after seven weeks.
b. The primary response to the initial injection peaked at 102 antibody units.
c. The primary response to the initial injection was faster, but not as intense as the secondary
response.
d. The secondary response to the initial antigen was both faster and more intense than the
primary response.
e. The primary and secondary responses to the initial antigen were about equal.
Protein kinase A is activated by
a. phosphorylation of its catalytic subunit. b. phosphorylation of its regulatory subunits. c. binding of cAMP to its catalytic subunits. d. binding of cAMP to its regulatory subunits.