Most often, genomic library screening uses ____
a. a labeled, complementary single-stranded RNA or DNA molecule called a probe
b. colonies of vector bacteria on a Petri dish in order to replicate the desired genome
c. recombinant plasmids containing DNA and DNA ligase
d. cut plasmids containing recognition sites used to carry DNA molecules
e. tRNA polymerase copies with a truncated copy of a DNA template
a
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What cytoskeletal protein is important to the function of the sperm cells illustrated in Figure 11.13?
A. microfilaments B. intermediate filaments C. microtubules D. All of the above are correct.
A small population of Dutch settled in South
Africa in the 17th century and became known as Afrikaners. By chance, a few Dutch settlers carried the gene for Huntington’s disease. Today Huntington’s disease occurs at a relatively high frequency in this population. This is an example of
a. the bottleneck effect. b. the founder effect. c. gene flow. d. the Red Queen effect. e. natural selection.
Which of the following allows materials to diffuse
into body cells and allows organs to grow larger and move more freely? a. a coelom b. mesoderm c. a mantle d. a water-vascular system e. a saclike gut
What are short tandem repeats?
Sequences of DNA that repeat over and over again Sequences of DNA that are conserved among every individual Sequences of DNA that are always located at the same location in the genome Cancerous DNA sequences found in affected individuals None of the above.