Hydrogen bonds can form between guanine and ____, and between adenine and ____
a. phosphate; sugar
b. thymine; cytosine
c. cytosine; thymine
d. sugar; phosphate
e. adenine; guanine
c
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Which of the following have moist, permeable skin that performs cutaneous respiration?
a. Actinopterygii b. Urodela c. Amniotes d. Squamata
Which statement summarizes the distinction between nonpolar and polar covalent bonds?
A. The difference in electronegativity of the atoms in a nonpolar covalent bond is very large. B. The electrons are more evenly and symmetrically distributed in orbit among atoms in a nonpolar covalent bond. C. The electrons are more evenly and symmetrically distributed in orbit among atoms in a polar covalent bond. D. Polar covalent bonds are formed when the atoms gain or lose electrons to bond and become oppositely charged ions.
Conjugation
A) is the direct transfer of DNA from one bacterium to another. B) occurs when a bacterium acquires DNA from the surrounding environment. C) is the result of cell division. D) occurs when a phage transfers bacterial DNA from one bacterium to another.
A particular region of the genomes of humans and peas have been shown to be highly homologous. This indicates that this region of the genome: