In exon shuffling, the duplicated or rearranged exons appear as new domains in different genes
Indicate whether the statement is true or false
TRUE
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Which of the following is a difference between
movement in the xylem and movement in the phloem?
a. movement in the phloem is by a pushing action; movement in the xylem is by a pulling action b. movement in the phloem occurs through nucleated cells; movement in the xylem occurs through non-nucleated cells c. movement in the phloem is always down; movement in the xylem is always up d. movement in the phloem starts in the roots; movement in the xylem starts in the leaves e. all of these are differences between movement in the xylem and movement in the phloem
Probes for cloned genes use
a. complementary nucleotide sequences tagged with a detectable label. b. specific antibodies that kill all the cells except those that have incorporated the genes. c. specific enzymes that lyse all the cells except those that have incorporated the genes. d. certain bacteria that glow when they take up the genes. e. all of these.
HIV is most commonly transferred by
a. casual contact. b. food. c. water. d. sexual intercourse. e. insect bites.
Which DNA Polymerase III subunit is not part of the clamp loading assembly?
A) ? B) ? C) ? D) ? E) ?