Human infants of low or very high birth weights are
less likely to survive than those of average weight.
This outcome is an example of __________
selection.
a. directional
b. stabilizing
c. balanced polymorphism
d. disruptive
e. gender
Answer: b
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Which of the following is true in the moss life cycle?
a. Gametophytes originate within and are dependent upon sporophytes. b. Sporophytes originate within and are dependent upon gametophytes. c. Both gametophytes and sporophytes are totally independent from each other and are equally dominant. d. Gametophytes are free-living and photosynthetic, but are replaced by a dominant sporophyte generation. e. Gametophytes are photosynthetic and partially independent from the sporophytes.
Albinism is a recessive disorder in which the skin and hair fail to produce pigment. The following question(s) ask you to evaluate the pedigree chart shown here in which "N" is the allele for normal pigmentation and "n" is the allele for albinism. The shaded circles for Deirdre and Shannon represent the only individuals expressing the disorder.
What is Dawn's genotype?
A. Nn B. nn C. NN D. NN or Nn
Which fungal group includes organisms used for the manufacture of anesthetics, birth control agents, industrial alcohols, meat tenderizers, and yellow food coloring?
A. Glomerulomycetes B. Microsporidia C. Ascomycetes D. Zygomycetes E. Basidomycetes
What are the products of the hydrolysis of ADP?
a. ATP, a water molecule, and free energy b. ATP, an inorganic phosphate ion, and free energy c. AMP, an inorganic phosphate ion, and free energy d. AMP, a water molecule, and free energy