The scientist credited with the discovery of DNA, which he called "nuclein," from salmon sperm in 1869 is

A) Johann Friedrich Meischer.
B) Eduard Zacharias.
C) Fredrick Griffiths.
D) Martha Chase.
E) Oswald Avery.


A) Johann Friedrich Meischer.

Biology & Microbiology

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Indicate whether the statement is true or false

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_________ speciation results when a population of a species is geographically isolated.

Fill in the blank(s) with the appropriate word(s).

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Small interfering RNA (siRNA) regulates gene expression by:

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