Allopolyploidy is defined as ____ chromosome number due to ____
a. maintenance of; interbreeding within a single species
b. decreased; hybridization of different species
c. decreased; interbreeding within a single species
d. increased; hybridization of different species
e. increased; interbreeding within a single species
ANSWER: d
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What formula correctly represents the behavior of CO2 in the blood?
A. CO2 + H2O « H2CO3 + CO B. CO2 + H+ « HCO3+ « H2O + H2CO3 C. CO2 + HCO3- « H+ + H2O + H2CO3 D. CO2 + H2O « H2CO3 « HCO3- + H+ E. CO2 + H2CO3 + O2 « H2O + CO2 + H2CO3
The partial negative charge at one end of the water molecule is attracted to a partial positive charge of another water molecule. What is this type of attraction called?
a. a polar covalent bond b. an ionic bond c. a hydration shell d. a hydrogen bond e. a hydrophobic bond
If the probability of a point mutation in a species were 10-8 per base pair per generation and each gamete in that species contained 3 x 10-8 base pairs, how many new point mutation would you expect per gamete per generation?
a) 3 b) 6 c) 3 x 10-8 d) 10-8 e) 3 x 108
Transport vesicles carrying acid hydrolases fuse with
a. lysosomes. b. endocytic vesicles. c. early endosomes. d. late endosomes.