Which is a true statement regarding the size of PCR products?
A. Since the number of DNA products extends beyond each primer with each cycle, when PCR is completed, the majority of products are of various sizes.
B. Since the number of DNA products ending exactly between both primers increases with each cycle, when PCR is completed, the majority of products are of similar size.
C. Since the length of primers increases with each cycle, when PCR is completed, the majority of products are of various sizes.
D. None of the choices are correct.
Answer: B
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The storage of energy and water in a plant involves
a. leaves. b. roots. c. stems. d. More than one of these answers is correct
Your study buddy is frustrated. "This book says that a single gene can make mice exhibit a certain behavior. That's ridiculous! How can you build any kind of neural circuit with just one gene?" What is your response?
A. "If the book says so it must be true. Ours is not to question why." B. "Some genes are longer than others, over 1000kb -- they have enough information to encode a full neural circuit." C. "Mice are a lot simpler than we are, and their brains are smaller. One gene is plenty for them to build a circuit." D. "What the book really means is: all else being equal, one variant of a gene is associated with higher levels of the behavior than the other variant of the gene. All the other thousands of genes are still needed to develop the brain. But variation in one gene can change how a certain neural circuit will behave."
Proliferation zone
What will be an ideal response?
____ contains double bonds.
A. CH4 B. H2O C. CO2 D. NH3