Pituitary dwarfism is caused by:
a. hypersecretion of thyroxine during childhood.
b. hyposecretion of thyroxine during childhood.
c. hypersecretion of growth hormone during childhood.
d. hyposecretion of growth hormone during childhood.
e. hypersecretion of epinephrine during childhood.
d
Biology & Microbiology
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The minimal amount of genetic information required for specialized transduction would include
A) the att region. B) the cos site. C) a helper phage. D) the att region, cos site, and a helper phage.
Biology & Microbiology
At the molecular level, what exactly are the mutagenic effects of UVA and UVB radiation?
What will be an ideal response?
Biology & Microbiology
Which of the following appeared last in the evolutionary timescale?
Biology & Microbiology
From the collecting duct, urine first goes to the ureter.
a. true b. false
Biology & Microbiology