One of the unexpected findings to occur in comparing the mouse and human genomes is
A. that junk DNA is a complex mechanism of regulation.
B. how similar some gene families are to their original transposons.
C. that there is far more junk DNA than we ever thought.
D. how incredibly different they are.
Answer: A
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The event called the Cambrian Explosion resulted in an abrupt increase in
A. geological activity. B. diversity of major animal groups. C. algal diversity. D. the number and size of glaciers. E. the amount of fish, of a single species, in the seas.
The regulation of milk release, water balance and uterine contractions during childbirth are mediated
by the ____ gland.
a. parathyroid b. pineal c. anterior pituitary d. posterior thyroid e. posterior pituitary
Which organelle can be considered a sorting, processing and packaging center?
a. vacuole b. centriole
c. centrosome d. Golgi complex e. endoplasmic reticulum
Dehydration is generally a more serious concern in older adults than in younger adults because:
A) older adults lose significantly more water through perspiration. B) total body water constitutes only 45% of body weight in older adults. C) renal function increases significantly in patients over 60 years of age. D) a person's total body water increases by 10% for each 10 years of life.