How is antigenic shift different from antigenic drift?
A. The change in viral proteins is sudden.
B. Genetic information is exchanged between
different strains.
C. A new viral strain is formed that represents
a mix of two or more strains.
D. All of the answer options are correct.
D
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A fatty acid has a(n)____ group at the end of a hydrocarbon chain
a. carbonyl group b. hydroxyl group c. phosphate group d. amino group e. carboxyl group
How are parasitoids different than parasites?
a. they are usually not insects b. they affect only plants c. the host is killed d. they have no lasting effect on their hosts e. they usually only affect the eggs of birds
The part of the eye that may be colored (e.g., brown, blue, green, or gray) is the
a. retina. b. sclera. c. choroid. d. cornea. e. iris.
The basic method of genetic analysis in humans requires a ____________________ of several
generations. Fill in the blank(s) with the appropriate word(s).