Amniocentesis involves sampling
a. the fetus directly.
b. the fetal cells floating in the amniotic fluid.
c. sperm.
d. blood cells.
e. placental cells.
Answer: b
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Researchers in Alaska were interested in increasing the sockeye salmon (Oncorhynchus nerka) population in three coastal lakes. To accomplish this, the ponds were treated with fertilizers. As a result, zooplankton biomass increased between 40% and 700% in the three lakes. The substantial growth in zooplankton would suggest that prior to these experiments, these lakes were __________________.
A. eutrophic B. stratified C. subject to low light levels D. oligotrophic
In plants, gametes form by the process of
a. spontaneous generation. b. DNA replication c. mitosis. d. meiosis. e. crossing over
Understanding how to inhibit myostatin production may lead to effective treatment of ____
a. increased muscle cell division b. addition of muscle companion cells c. stretching of individual muscle cells d. synthesis of new protein filaments e. overproduction of myostatin
What does the acronym VNTR mean?
A) variable number tandem repeats B) varied nucleotides to repeat C) volumes of nucleotide tandem repeats D) variation of nucleotide terminal repeats