"Aneuploidy" is a condition in which
a) A point mutation causes the loss of a functional allele
b) Both copies of an inherited gene carry elevated risk of disease
c) There is an abnormal number of chromosomes / copies of the genome
d) A cell is permanently stuck in mitosis
Answer: c) There is an abnormal number of chromosomes / copies of the genome
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Many marine and freshwater bony fish achieve osmoregulation via _____
A) loss of water through the gills B) gain of salt through the gills C) loss of water in the urine D) no drinking of water E) gain of water through food
Pesticide runoff from a farm into a river is an example of a ____ of pollution
a. nonpoint source. b. reservoir. c. point source. d. pinpoint reserve. e. watershed.
List the stages in the eukaryotic cell cycle and identify the principal events characteristic of each stage. What will be an ideal response?
Which one of the following is characteristic of cardiac and smooth muscle, but not skeletal muscle?
A) voluntary contraction B) striated appearance C) presence of gap junctions D) presence of actin and myosin in muscle cells E) contraction is initiated by motor neurons