What does the phenotype of an individual refer to?
a. copies of chromosomes
b. physical appearance
c. number of alleles
d. genetic makeup
Ans: b. physical appearance
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The structures labeled "B" in the accompanying figure ____
a. prevent movement of materials between cells b. are found in tissues subjected to stretching c. allow the free passage of materials between cells d. are found mostly in heart muscle e. are found in most tissues except in the stomach
Codons that serve as "stop" signals for translation are recognized by
A. anticodons. B. aminoacyl-tRNA synthetases C. translation terminators. D. tRNA. E. release factors.
Which of the following is not a common analytical instrument approach in proteomics?
a. Atomic absorption analysis of the metal content of plant tissues b. High-throughput microscope analysis of the distribution of GFP fusion proteins in cells c. Mass spectrometry d. Two-dimensional gel electrophoresis
Plants do not have a germ line and gametes are derived from cell lines that are also responsible for the growth of the organism. Can you apply the disposable soma hypothesis?
a. Yes, trade-offs between reproduction and repair are still conceivable. b. Yes, plants have a much higher physiological tolerance for the effects of mutations. c. No, the distinction between somatic cells and germ line is at the heart of the hypothesis. d. No, plants do not produce eggs or sperm but gametophytes that represent an additional genera-tion.