During library screening, PCR, Southern blotting, and other techniques, binding two pieces of DNA to each other by hydrogen bonding is called ________
A) autoradiography
B) hybridization
C) DNA ligation
D) reverse transcription
E) polyadenylation
B
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The agouti gene, when expressed in mice, makes them obese, ravenous, yellow, and prone to diabetes. The agouti phenotype is dominant. During ovulation an agouti mouse is given a drug that methylates (or shuts off the agouti gene). She is then bred to another mouse and gives birth to a litter of baby mice, none of whom have the agouti phenotype. Which of the following is accurate?
A. An epigenetic change in the mother was passed to her offspring. B. Her offspring inherited the methylated form of the agouti gene. C. The agouti gene will be inactivated for the entire lives of her offspring. D. All of these are correct.
What is the main advantage of the settling-point model of body-weight regulation over then body-fat set-point model?
What will be an ideal response?
Truffles, the spore-containing structure of a ________, are eaten as a delicacy
Fill in the blank(s) with correct word
Pea plant tendrils wrapping around a string demonstrate
A) phototropism. B) lumitropism. C) gravitropism. D) amylotropism. E) thigmotropism.