Early and late viral proteins are classified according to their relative
A) evolutionary appearance in virus genomes.
B) stability during infection.
C) time of synthesis following host infection.
D) transmission into virions.
Answer: C
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Genetic drift is a random process that can change the genetic structure of a population
a. True b. False Indicate whether the statement is true or false
Cytoplasmic DNA is a feature of _______________cells
a. eukaryotic b. prokaryotic c. animal d. plant
The important feature of all cells that react to a
specific hormone is the a. type of blood supply they receive. b. proximity of the endocrine gland. c. presence of an appropriate receptor molecule. d. characteristic of their mitochondrial membrane. e. presence of specific genes responsive to the hormone.
Transcription of structural genes in an inducible operon _____
A) occurs continuously in the cell B) starts when the pathway's substrate is present C) starts when the pathway's product is present D) stops when the pathway's product is present