At which phase of the growth curve is replication rate equal to death rate?
Ans: stationary phase
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Water can move inside a root via the ____
a. symplastic pathway only b. transmembrane and symplastic pathways c. transmembrane pathway only d. apoplastic, transmembrane, and symplastic pathways e. apoplastic pathway only
A recessive allele in tigers causes the white tiger. If two normally pigmented tigers are mated and produce a white offspring, what percentage of their remaining offspring would be expected to have normal pigmentation?
A) 25% B) 50% C) about 66% D) 75% E) about 90%
A genomic library consists of fragments of all of the DNA:a
that occurs in one species. b. contained in one chromosome. c. that would be found in a typical cell of a particular organism. d. in a recombinant gene. e. that codes for functional enzymes in a typical cell of a particular organism.
What catalyzes the unwinding of the DNA double helix during DNA replication?
a. topoisomerase b. primase c. DNA polymerase d. helicase