A method used to link genetic markers with specific genes on chromosomes is called _____________. Fill in the blank(s) with the appropriate word(s)
ANS: positional cloning
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Prezygotic mechanisms lead to reproductive isolation by preventing the formation of
A. mating pairs. B. fertile eggs. C. fertile sperm or pollen cells. D. somatic cells. E. hybrid zygotes.
Which of the following damaged templates encountered by a replication fork is repaired by gap repair?
A. A replication fork encounters a lesion and translesion synthesis occurs. B. The replication fork encounters a lesion and stalls. C. The replication fork encounters a lesion and bypasses it, restarting synthesis on the other side of the lesion. D. The replication fork encounters a lesion at which repair has been initiated and the fork collapses. E. The replication fork encounters heteroduplex DNA.
Which statement about carbon is correct?
a. Heterotrophs consume autotrophs to obtain carbon. b. Photosynthesis converts organic carbon to carbon dioxide gas. c. Carbon is the most abundant element in all living organisms. d. The long-term cycling of carbon occurs through respiration.
Sexual reproduction first evolved among the
A. amphibians. B. land-dwelling vertebrates. C. insects. D. marine organisms.