A person who inherited the allele combination AA is ____
a. homozygous dominant
b. homozygous recessive
c. heterozygous
d. codominant
e. dominant
ANSWER: a
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True or false: Many mutations are detrimental to organisms that acquire them, but other mutations are beneficial and drive evolution of that species
A. true B. false
A host plant race may develop ____
a. only when an organism’s genes for the host choice change b. only when an organism’s genes for mating preferences change c. only when a geographical barrier exists d. when genes for the host choice mating preferences change e. when genes for mating preferences change and geographical barriers exist
In this representation of transcription, strand #
____ is ____ because it ____.
a. 2; RNA; is double-stranded b. 3; RNA; contains uracil c. 2; RNA; contains thymine d. 2; RNA; has no uracil e. 3; DNA; contains adenine
Which of the following components is/are found in the cell walls of gram-positive bacteria but NOT gram-negative bacteria?
A. Cytoplasmic membrane B. Lipopolysaccharide C. Outer membrane D. Peptidoglycan E. Teichoic acid