The onset of puberty is triggered by maturation of the brain, which stimulates the hypothalamus to secrete
A) testosterone.
B) progesterone.
C) gonadotropin-releasing hormone (GnRH).
D) luteinizing hormone (LH).
E) chorionic gonadotropin (CG).
C
Biology & Microbiology
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A single experiment or observation can ____________ a hypothesis
A. reject B. support C. prove D. reject or support E. reject or prove
Biology & Microbiology
In angiosperms, where does pollen production take place?
a. megasporangium b. antipodal cells c. microsporangium d. synergid cells
Biology & Microbiology
Describe the newest method of DNA fingerprinting, which uses PCR and short tandem repeat sequences (STRs).
What will be an ideal response?
Biology & Microbiology
What was the name of the molecule that Jacob and Monod (1961 ) postulated carried genetic information from DNA to the site of protein manufacture?
What will be an ideal response?
Biology & Microbiology