Which scientist was responsible for the characterization of linked genes?

a. Gregor Mendel
b. James Watson
c. Thomas Morgan
d. Alfred Sturtevant


Ans: c. Thomas Morgan

Biology & Microbiology

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The validity of scientific discoveries should be based on ____

a. opinions b. evidence c. philosophy d. hearsay e. hunches

Biology & Microbiology

Which of the following structures is/are founding in eukaryotic cells, but NOT found in prokaryotic cells?

A) plasma membrane B) ribosomes C) cytosol D) chromosomes E) mitochondria

Biology & Microbiology

A Gram-positive psychrotrophic rod ________ is a frequent contaminant of dairy products and meat and survives phagocytosis

A) Escherichia coli B) Mycobacterium leprae C) Clostridium perfringens D) Bacillus thuringiensis E) Listeria monocytogenes

Biology & Microbiology

The ultimate source of energy for most life on Earth is:

A) oxygen. B) the sun. C) the metabolic processes found in all living things. D) heat from the Earth.

Biology & Microbiology