Pressure that a fluid exerts against a structure that contains it is called:
a. hypertonic
b. pressure gradient
c. osmosis
d. turgor
e. isotonic
d
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Which type of disorder is most difficult to correct by gene therapy?
A) a dominant disorder B) an incompletely dominant disorder C) a recessive disorder D) Disorders showing all of these forms of dominance present equal challenges.
The Hardy-Weinberg law is used to calculate allele and genotype frequencies ____
a. in small populations b. when mating is random c. in migrating populations d. when some alleles confer an evolutionary advantage over other alleles e. the population descends from a single ancestor
How much energy is ultimately converted into chemical energy by photosynthesis?
a. less than 1% b. 1-2% c. 5% d. 10% e. 20%
Epigenetic modifications _____
a. are considered evolutionary b. are completely reset during development c. alter the DNA sequence d. can persist for generations e. respond less rapidly to environmental changes than altering the DNA sequence