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.
Biology & Microbiology
The hormone that is antagonistic in action to
glucagon is
a. norepinephrine. b. insulin. c. thyroxine. d. epinephrine. e. mineralocorticoids.
Biology & Microbiology
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