Antibodies are made by
A. red blood cells.
B. macrophages.
C. B cells/plasma cells.
D. T cells.
C
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Albinism in most animals is an epistatic trait characterized by a lack of melanin pigment in the eyes, skin, and hair. If the allele for albinism is a, the allele for brown coat color is B, and the allele for red coat color is b, which of the following genotypes would result in an albino cow?
A. AaBb B. aaBB C. aabb D. Aabb E. aaBB and aabb
Much of the loss of biologically available nitrogen in the ocean is now thought to be due to a consortium of microbes carrying out ________.
A. denitrification B. the anammox reaction C. nitrogen fixation D. nitrification
What are the genes that code for positive cell-cycle regulators, like Cdk, called?
a. oncogenes b. tumor suppressor genes c. proto-oncogenes d. mutated genes
In a __________, water or some nutrient moves from an environmental reservoir, through organisms,
then back to the environment. Fill in the blank(s) with the appropriate word(s).