Distances between genes in cM are directly proportional to the physical distances between them on the
chromosome. Indicate whether the statement is true or false.
F
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In a phylogenetic tree, positions indicating a common ancestor are referred to as:
A. branches B. nodes C. trunks D. roots E. limbs
You are an engineer at a power plant that creates large volumes of hot waste water, which disrupts the ecosystem of the river it drains into. Another part of the plant requires warm oil, and the plant uses large amounts of energy to heat it. Inspired by countercurrent exchange in whales, you save energy and benefit the environment by
A. running the oil pipes under the river after dumping in the hot waste water B. running the oil pipes around the waste water pipes, to allow heat transfer from water to oil C. running the waste water and oil through a single pipe D. adding a sensor, integrating center and effectors to control temperature in both pipes Clarify Question What is the key concept addressed by the question? What type of thinking is required? Gather Content What do you already know about countercurrent exchange? What other information is related to the question? Choose Answer Given what you now know, what information is most likely to produce the correct answer? Reflect on Process Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
In DNA, the most important reason adenine does not ever pair up with cytosine is that: a. There is a size problem that prevents pairing. b. Adenine bonds with two hydrogen bonds, and cytosine bonds with threehydrogen bonds
c. Adenine bonds with three hydrogen bonds and cytosine bonds with two hydrogenbonds. d. Adenine can occasionally bond with cytosine.
Which of the following is NOT true of the
genetic code?
a. It is the same for almost all organisms. b. There are 64 codons. c. It has within it 5 stop codons. d. Most amino acids have more than one codon that codes for it. e. Each codon is made up of three nucleotides