The constant region of an antibody molecule is
A) the binding site for antigens.
B) part of the heavy chains only.
C) similar in all antibody molecules.
D) the binding site for two antigens.
C) similar in all antibody molecules.
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Which of the following nucleotide sequences represents the complementary sequence that would bind
to the DNA strand 5'-GACGTT-3'?
a. 5'?TCATGG?3' b. 3'?TCATGG?5' c. 3'?CTGCAA?5' d. 3'?AGTACC?5' e. 5'?TTGCAG?3'
The ability to taste PTC and other bitter chemicals is controlled by ____
a. hormone levels that change throughout life b. the presence of fats and sugars in the food being eaten c. the amount of PTC exposure as a child d. the amount of capsaicin present in taste buds e. proteins on the surface of receptor cells
Which are evolutionary modifications that improve the survival and reproductive success of an organism?
a. mutations b. adaptations c. artificial traits d. homoplastic traits e. vestigial structures
What type of genetic material did scientists use to track gene flow in a current population of wildebeest?
A. Chromosomal DNA B. Mitochondrial DNA C. Y-chromosomal analysis D. Ribosomal RNA E. Messenger RNA