Which stage of development immediately precedes the formation of specialized tissue and organs?
A. Gamete formation
B. Cleavage
C. Gastrulation
D. Blastulation
E. Binary fission
Answer: C
Biology & Microbiology
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Which of the following choices is a feature of mitosis but not meiosis?
a. does not make exact copies of the original cell b. favors crossing over c. produces clones of parent cell d. has two cell divisions
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Two pairs of electrons shared between two atoms is
called __________. Fill in the blank(s) with the appropriate word(s).
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________ alter repressor proteins thereby increasing the rate of transcription initiation.
A. Effectors B. Inducers C. Modulators D. Corepressors
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