The effect of inositol triphosphate is usually transient because __________.
a) it is slowly activated enzymatically
b) it is rapidly inactivated enzymatically
c) it is so big
d) it is so small
e) it is so stable
Ans: b) it is rapidly inactivated enzymatically
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The sporangia (asci) of ascomycetes each ultimately produces:
A. eight diploid spores B. four genetically identical haploid spores C. four haploid spores, each genetically different D. eight identical haploid spores E. eight haploid spores, of which there are two each of four different genetic types
During spermatogenesis, each primary spermatocyte divides to eventually produce ________ spermatids
a. 1 b. 2 c. 4 d. 8
Complete reproductive isolation is evidence that what has occurred?
a. extinction b. speciation c. polyploidy d. hybridization e. gene flow
The development of a new species is called __________.
Fill in the blank(s) with the appropriate word(s).