Which event of fertilization occurs first?
A. fast block to polyspermy
B. the entry of sperm DNA into the egg
C. the slow block to polyspermy
D. the acrosomal reaction
E. the cortical reaction
D. the acrosomal reaction
Biology & Microbiology
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The initial carrying capacity of an environment is indicated by ____
a. A b. B c. C d. D e. E
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The start signal in an mRNA strand is:
1.UAG 2.GUA 3.AUG 4.TAG 5.ATG
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Allopatric speciation requires
a. accelerated gene flow. b. physical separation. c. physical diversity. d. behavioral diversity. e. all of these.
Biology & Microbiology
Proximal is indicated by
a. A. b. B. c. C. d. D. e. E.
Biology & Microbiology