What is the function of reverse transcriptase?
a) It catalyzes the formation of a polypeptide from an RNA template.
b) It catalyzes the formation of DNA from a polypeptide template.
c) It catalyzes the formation of RNA from a polypeptide template.
d) It catalyzes the formation of RNA from a DNA template.
e) It catalyzes the formation of DNA from an RNA template.
Answer: e) It catalyzes the formation of DNA from an RNA template.
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A culture in a closed vessel to which no additional medium is added and from which no waste products are removed is called a ________ culture.
A. semicontinuous B. continuous C. batch D. fed-batch
Molecular paleontology _____
A. studies the morphology of extinct species B. studies the DNA of extinct species C. cannot use rRNA
Which animal has a multichambered stomach
A. rabbit B. cow C. horse D. insect E. fish
Assume that investigators crossed a strain of flies carrying the dominant eye mutation Lobe on the second chromosome with a strain homozygous for the second chromosome recessive mutations smooth abdomen and straw body. The F1 Lobe females were then
backcrossed with homozygous smooth abdomen, straw body males, and the following phenotypes were observed: smooth abdomen, straw body 820 Lobe 780 smooth abdomen, Lobe 42 straw body 58 smooth abdomen 148 Lobe, straw body 152 Give the gene order of these three loci. A) Lobe, straw, smooth B) it is impossible to tell C) Lobe, smooth, straw D) smooth, straw, Lobe E) smooth, Lobe, straw