Which of the following lakes is likely to be the most oligotrophic?
A) small and shallow
B) small and deep
C) large and shallow
D) large and deep
D
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In bacterial cell division, the cell divides into two nearly equal halves. This process is referred to as:
A. binary fission B. cytokinesis C. meiosis D. mitosis E. fusion
What is the observed genotypic frequency of Aa individuals?
A) 0.144 B) 0.72 C) 0.40 D) 0.48 E) 1.44
Temporal isolation and mechanical isolation are reproductive isolating mechanisms that are classifiedas:a
homozygotic barriers. b. prezygotic barriers. c. heterozygotic barriers. d. postzygotic barriers. e. homozygotic barriers.
Which of the following plant hormones was discovered in infected rice seedlings that grew extremely tall and slender with "foolish seedling disease"?
A. auxin B. ethylene C. cytokinin D. gibberellins E. abscisic acid