Answer the question using the accompanying figure. What does letter E represent?
a. different RNA molecules transcribed from a coding region of DNA
b. the products of a PCR reaction in which the primers annealed to multiple sites
c. the products of a PCR reaction performed without one of the nucleoside triphosphates
d. the products of a PCR reaction that had more than two primers
e. a DNA marker ladder
ANSWER: e
You might also like to view...
The function of heart valves is to ____
a. form blood cells b. participate in immunity c. prevent backflow of blood d. prevent clot formation e. push blood into the aorta
Which one of the following characteristics is NOT true for all living cells?
a. All cells are derived from preexisting cells. b. All cells contain a nucleus. c. All cells utilize organic fuel molecules as energy sources for their activities. d. All cells respond to outside stimulation. e. All cells possess a plasma membrane.
Some plants fail to produce chlorophyll, and this trait appears to be recessive. Many plants also self-pollinate. If we locate a pea plant that is heterozygous for this trait, self-pollinate it and harvest seeds, what are the likely phenotypes of these seeds when they germinate?
A. All will be white and lack chlorophyll. B. About one-fourth will be green and three-fourths white. C. About one-half will be green and one-half white. D. About one-fourth will be white and three-fourths green. E. All will be green with chlorophyll.
The blood vessels of the umbilical cord are derived from which one of the following structures?
A) allantois B) chorion C) embryonic disk D) amnion E) yolk sac