In sexually reproducing species, genetic variations are not passed onto offspring via ____
a. mutation
b. crossing over
c. independent assortment
d. fertilization
e. mitosis
ANSWER: e
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An infected intravenous (IV) catheter tip grew out gram-positive cocci, which were catalase positive and coagulase negative. The zone size of the novobiocin disk measured 18 mm. The most likely organism causing infection is:
a. S. saprophyticus. b. S. epidermidis. c. S. hominis. d. S. cohnii.
Statements about what a researcher expects to happen to one variable if another variable changes are called ____
a. predictions b. hypotheses c. experimental variables d. theories e. scientific research
Mendel selected pea plants for his experiments because ____
a. the offspring are infertile b. others were also using pea plants for their experiments and this would allow data sharing c. male and female flowers are on separate plants d. they can be self-fertilized or artificially fertilized by hand e. he was told by his superior that only pea plants were suitable for experimentation
Plants that are exactly alike genetically are
A. homozygous. B. mutants. C. clones. D. highly genetically diverse.