The allele T is in 85 percent of a population (p=0.85). According to the Hardy-Weinberg equation, what percentage of the population will have the recessive allele t (q=?)?
A) 15%
B) 50%
C) 85%
D) 0%
A) 15%
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If the concentration of thyroid hormone is high, ____
a. the secretion of thyroid releasing hormone is inhibited b. the secretion of thyroid stimulating hormone is increased c. calcitonin production is increased d. resting metabolism decreases e. more than one of these occurs
Which process involves a more rapid synthesis and greatly increased titer of antibody when the immune system is subsequently exposed to the same antigen?
A. Neutralization B. Opsonization C. Complement fixation D. Agglutination E. Anamnestic response
Cancer occurs when
A. both uncontrolled cell division and stimulation of apoptosis occurs. B. cells are unable to divide because of a mutation. C. apoptosis occurs. D. the regulation of the cell cycle is lost and uncontrolled cell division occurs. E. faulty spindle fibers are unable to pull chromatids apart.
When certain medium height hybrid plants were crossed, they produced offspring that were dwarf,
medium, and tall in a ratio of 1 : 2 : 1. This is an example of: a. variegation. b. hybrid vigor. c. incomplete dominance. d. epistasis. e. a polygenic trait.