Which of the following results in a normal human female phenotype?
a. XX
b. XO
c. YY
d. XXX
e. YYY
ANSWER: d
Biology & Microbiology
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An animal has a heart with two chambers and
blood flows in a single circuit. This animal is
a. a salmon. b. a frog. c. a red-winged blackbird. d. a crocodile. e. more than one of these
Biology & Microbiology
Which environment is most likely to produce trees without annual rings?
A. Tropical rain forest B. Northern evergreen forest C. Areas with alternating wet and dry seasons D. Temperate-deciduous forests E. None of these, because annual rings are characteristic of all trees
Biology & Microbiology
The F plasmid is involved in which of the following processes?
A) conjugation B) transduction C) transposition D) transformation
Biology & Microbiology
Lipid-soluble compounds, water, and gases simply diffuse across the plasma membrane by
What will be an ideal response?
Biology & Microbiology