The genotype Ff is an example of a:
A) monohybrid genotype.
B) heterozygous genotype.
C) trait controlled by multiple genes.
D) dihybrid genotype.
E) homozygous genotype.
Answer: B
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Neonates and individuals who are immunocompromised are at risk for developing meningitis if they contract which organism?
a. Elizabethkingia meningoseptica b. Myroides odoratus c. Sphingobacterium spp. d. Centers for Disease Control and Preven-tion (CDC) group EO-3
In a human cell, there are _____after DNA replicates during S phase
a. 92 chromosomes and 46 pairs of sister chromatids b. 46 chromosomes and 23 pairs of sister chromatids c. 23 chromosomes and 23 pairs of sister chromatids d. 92 chromosomes and 23 pairs of sister chromatids e. 40 chromosomes and 20 pairs of sister chromatids
You have isolated DNA from actively replicating cells. Where would you expect to find this DNA on a gel?
A) DNA would be highly supercoiled and would be found in the band seen in the positive pole (bottom) of Lane 1. B) DNA would be predominantly relaxed and would be found in the band seen in the positive pole (bottom) of Lane 1. C) DNA would be highly supercoiled and would be found in the band seen in the negative pole (top) of Lane 1. D) DNA would be predominantly relaxed and would be found in the band seen in the negative pole (top) of Lane 1. E) DNA would be both relaxed and supercoiled, so it would appear in a pattern similar to Lane 2.
Explain how transcriptional control by the NrpR protein of the archaeon Methanococcus maripaludis is similar to transcriptional control in bacteria. It is known that 2-oxoglutarate (2OG) is used by cells as an indicator of nitrogen deficiency
Based on what you know about effector molecules in bacterial operons, how would 2OG behave in M. maripaludis (as an inducer, a corepressor, etc.) and what effect would this molecule have on NrpR binding?