The older kingdom Monera contains the same organisms as the two domains bacteria and ARCHAEA
a. true
b. false
Ans: a. true
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How did Meselson and Stahl distinguish between semiconservative and dispersive replication in their experiment?
A. After one round of replication, only mixed DNA molecules were present in native gradients. B. After two rounds of replication, only mixed DNA molecules were present in the gradient. C. After two rounds of replication, both heavy and light DNA molecules were present in the gradient. D. After one round of replication, both heavy and light DNA single-strands were present in alkaline gradients. E. After two rounds of replication, only heavy DNA strands were present in alkaline gradients.
Approximately ____ genes have been identified in the genome of Arabidopsis thaliana
a. 28,000 b. 5,400 c. 3,200,000 d. 120,000 e. 67,000
Explain the mechanism HIV uses to avoid destruction by antibodies present in the human immune system
What will be an ideal response?
The field of ________ is a thoroughly modern discipline that has led to new ways to treat infectious disease
A) recombinant DNA technology B) epidemiology C) immunology D) serology E) biochemistry