When pair-rule genes and segment-polarity genes are mutated, larvae display disturbances in segmentation patterns
A. true
B. false
A
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Where does the energy come from to add a uracil to the 3' end of a transcript?
A. the energy released by allowing the uracil to complementary base pair with an adjacent thymine B. the hydrolysis of a single phosphate from the incoming UTP molecule C. the cell's supply of ATP D. the hydrolysis of pyrophosphate from the incoming UTP molecule E. the hydrolysis of all three phosphate groups from the incoming UTP molecule
An oak tree can support hundreds of beetles, caterpillars and other primary consumers. This is an example of
A. a pyramid of biomass. B. excessive levels of primary production. C. an unusually diverse group of primary consumers. D. primary parasitism. E. an inverted pyramid.
Members of two populations in different parts of the world have the same form of inherited breast cancer. The affected individuals in each population have only one specific mutation, but it is different between the two populations. An explanation for this mutation difference among these populations is
A) a founder effect. B) mutations associated with religion. C) random mating. D) Hardy-Weinberg disequilibrium.
Enzymes from the pancreas function in the
a. stomach. b. colon. c. small intestine. d. mouth. e. esophagus