When would monozygotic (identical) twins be produced?

A) One sperm fertilizes two different eggs.
B) One egg is fertilized by two different sperm.
C) One embryo splits into two embryos.
D) Two different sperm fertilize two different eggs.


C

Biology & Microbiology

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In humans, blood cells are produced in the

a. bone marrow. b. heart. c. kidneys. d. liver. e. lymph nodes.

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The hormone that is antagonistic in action to

glucagon is

a. norepinephrine. b. insulin. c. thyroxine. d. epinephrine. e. mineralocorticoids.

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Which of the following requires eIFs for initiation?

A) prokaryotic translation B) chaperonin activity C) eukaryotic translation D) eukaryotic transcription E) post-translational modification

Biology & Microbiology

Crocodiles are living representatives of which lineage?

a. archosaurs b. lepidosaurs c. synapsids d. anapsids

Biology & Microbiology