A gene can be silenced by the addition of what
to a nucleotide?
a. -CH3
b. -COOH
c. -OH
d. -NH2
e. -PO4
-3
A
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Some people are unable to properly metabolize the drug Purinethol, which is given to patients with acute lymphoblastic leukemia; therefore, such patients must be first tested for the associated genetic variant to determine proper dosage of the drug. This scenario best illustrates the use of _____
a. pharmacogenomics b. map-based sequencing c. positional cloning d. annotation of DNA sequences e. comparative genomics
Which type of crossover event produces all four recombinant chromosomes?
A) single-strand crossover B) two-strand double crossover C) three-strand double crossover D) four-strand double crossover E) None of the above; all crossover events produce a combination of parental and recombinant chromosomes.
How are birds able to get fresh air even when they are exhaling?
What will be an ideal response?
Nutrient molecules are used as building blocks or for energy. This best represents which characteristic of life?
What will be an ideal response?