The genetic code is said to be ________ because more than one codon will specify a particular amino acid.
A. ambiguous
B. multiplicative
C. degenerate
D. repetitious
Answer: C
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Illustrate the reaction center of a purple bacterium with the following features highlighted: antenna pigments, the special pair, protein H, protein L, protein M, quinone pool, and ATPase
Also explain the importance of proximity for these components within a reaction center. What will be an ideal response?
Bacteria are useful to study because
A. they produce protein in a similar manner to more complex organisms. B. they replicate DNA in a similar manner to more complex organisms. C. they produce energy in a similar manner to more complex organisms. D. they are grown quickly, easily, and cheaply. E. All of the choices are correct.
Mendel was quite ahead of his time in genetics, and many of his hypotheses have stood up to newer discoveries. However, we now know that independent assortment has many exceptions. Which of the following is an exception to the law of independent assortment?
a. monohybrid cross b. test cross c. gene linkage d. random mutation
Suppose that your father is heterozygous for a recessive disorder. Also suppose that you know your mom has two "good" alleles. What is the probability that you will have the disorder?
a. 75% b. 50% c. 25% d. 0%