In a 3-D double helix model of DNA, the center consists of ____
a. deoxyribose sugars
b. hydrogen bonds
c. nucleotide base pairs
d. phosphate groups
e. sugar–phosphate backbones
ANSWER: c
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What is the probability that a person would have cystic fibrosis if one of her parents was homozygous dominant and the other was a carrier for cystic fibrosis?
a. 0 b. 1:4 c. 1:6 d. 1:8 e. 1:16
Genes A and B are located 10cM from each other on a chromosome. Gene C is located 25cM from gene A and 15cM from gene B. Assuming that I = 0, what is the probability that the trihybrid ABC/abc will produce an ABC gamete?
A) 76.5% B) 38.25% C) 25% D) 1.5% E) .75%
Cardiovacular disease is linked to gum disease or __________
Fill in the blank(s) with the appropriate word(s).
The accuracy of charging a tRNA with the correct amino acid is about 1.5 × 10-5, which is lower than the error rate of translation (which is about 2 to 5 × 10-4)
Aminoacyl-tRNA synthetases use both kinetic and chemical proofreading. What is the distinction between these two proofreading methods? What will be an ideal response?