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
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The validity of scientific discoveries should be based on ____
a. opinions b. evidence c. philosophy d. hearsay e. hunches
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
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
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.