Which of the following is not one of the principles of linkage that Morgan obtained from his experiments?
A. Genes that are on the same chromosome may be inherited together.
B. Crossing over exchanges pieces of chromosomes and creates new allele combinations.
C. The likelihood of crossing over occurring between two genes is dependent on the distance of the genes from one another.
D. Genes that are on the same chromosome are always transmitted together as a unit.
D
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A pH of 6 is ____ times more ____ than a pH of 2
a. 3; acidic b. 4; acidic c. 3; basic d. 10,000; basic e. 40; basic
If a drug interferes with the function of ribosomes, which of the following is likely to occur?
A. DNA will not be able to make copies of itself. B. Proteins will not be produced. C. Mutations will occur to the DNA. D. Messenger RNA will not be manufactured.
The Earth's surface releases ________ that is absorbed by the atmosphere, stabilizing or raising atmospheric temperature.
A. gamma radiation B. near-ultraviolet radiation C. ultraviolet radiation D. long-wave infrared radiation E. x-rays
Which of the following best describes "spongy bone"?
A) very similar to compact bone but more flexible B) soft bone tissue C) bone tissue found only in the skull D) contains blood-cell-producing red marrow