In the figure above, step "a" represents
a. the two parental DNA strands.
b. the two F1 generation DNA strands.
c. the two F2 generation DNA strands.
d. the DNA molecule to be transcribed.
e. the DNA molecule to be translated
A
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Transformation is not useful in determining relatedness between two organisms because it frequently crosses genera.
Answer the following statement true (T) or false (F)
How do lipid insoluble hormones affect targets within the cell?
a. They bind to channel proteins for transport into the cell. b. They hydrolyze receptors for lipid soluble hormones, blocking their action. c. They trigger the release of a second messenger in the cytoplasm. d. Lipid insoluble hormones are synthesized and remain inside the cell.
Which molecule in the Krebs cycle acts as a substrate of the first reaction and is a product of the last reaction?
1.pyruvate 2.acetyl-coenzyme A 3.citrate 4.oxaloacetate
Heinz Fraenkel-Conrat induced point mutations in the genes encoding coat proteins of TMV and looked for changes in the resulting proteins
By examining the effect of single-base changes in the mRNA on the amino acid sequence, Conrat proved that __________. A) the genetic code is overlapping B) the genetic code is nonoverlapping C) the genetic code is redundant D) there are 20 amino acids E) the genetic code is triplet