In the analysis of a genetic disorder, you notice that the phenotypic distribution follows a bell-shaped curve, and that multiple genes are probably involved. This suggests what pattern of inheritance?
a) Autosomal dominant
b) Autosomal recessive
c) Incomplete dominance
d) Polygenic trait
d) Polygenic trait
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The process in which the cell actually divides is called
a. mitosis. b. meiosis. c. cytokinesis. d. actin. e. cell plate formation.
What are the two phases of photosynthesis?
a. chemiosmosis and photochemical reactions b. carbon reduction reactions and oxidation reactions c. light-dependent reactions and carbon fixation reactions d. carbon fixation reactions and oxygen fixation reactions e. light-independent reactions and carbon fixation reactions
Biological nitrogen fixation is carried out ________.
A. only in totally anaerobic environments B. only by a limited number of prokaryotes C. only by prokaryotes in symbiotic relationships with plants D. by prokaryotes and some protists
____ is/are considered to be the ancestor to both Homo neanderthalensis and Homo sapiens.
A. Homo habilis B. Paranthropus boisei C. Homo floresiensis D. Denisovans E. Homo erectus