Why are the amino acid sequences of eukaryotic histones so similar to one another, even among distantly related species?
What will be an ideal response?
Evolutionary conservation of these sequences is a strong indicator that histones perform the same basic role in organizing the DNA in the chromosomes of all eukaryotes.
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If a mutation rendered the signal recognition particle receptor nonfunctional, what would be the most obvious effect on the cell?
A. Translation of most proteins would be incomplete. B. All proteins normally secreted by the cell would remain partially formed and attached to the endoplasmic reticulum. C. Proteins destined for the nucleus would remain in the cytosol. D. No proteins would arrive at their proper destinations within the cell. E. All proteins normally secreted by the cell would remain in the cytosol.
Replacing an adenine nucleotide with a guanine is an example of a
A) translocation. B) transition. C) transversion. D) forward mutation. E) reversion or reverse mutation
Who is referred to as the Father of
Biogeography?
a. Cuvier b. Lyell c. Lamarck d. Aristotle e. Wallace
Which of the following is a vitamin-deficiency disease?
A. scurvy B. Lyme disease C. rabies D. kwashiorkor