Species of fossil organisms are morphospecies, which means they are defined on the basis of ________
A) DNA sequence similarities
B) mate recognition behaviors
C) anatomical features
D) ability to interbreed
E) the locations where they are found
C
Biology & Microbiology
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Swelling of one or more lymph nodes is referred to as _______
Fill in the blank(s) with the appropriate word(s).
Biology & Microbiology
HCl in the stomach acts to
a. neutralize buffers. b. kill harmful bacteria. c. switch off certain digestive enzymes. d. produce trypsin. e. prevent breakdown of protein.
Biology & Microbiology
Clinical significance of plasmids
What will be an ideal response?
Biology & Microbiology
DNA contains the nitrogenous base ________ instead of ________, which is found only in RNA.
A) a deoxyribose sugar; a ribose sugar B) uracil; thymine C) uracil; guanine D) thymine; uracil
Biology & Microbiology