The three primary germ layers are formed during

a. fertilization.
b. cleavage.
c. organ formation.
d. gastrulation.


a

Biology & Microbiology

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Which plant specialization mutually benefits the young root and a fungus? a. All of these choices

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An autosomal dominant condition that causes a person to grow no taller than about 4 feet 4 inches is

a. Marfan syndrome. b. Tay-Sachs disease. c. Huntington disease. d. achondroplasia. e. phenylketonuria.

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________ is the observable response of organisms to external or internal stimuli.

A. Ecology B. Allomonal mediation C. Behavior D. Pheromonal mediation E. Behavioral ecology

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At the Beautiful Mutants Flower Shop, a variety of unique mutant plants are sold. What would be the best flower to give to a friend who is allergic to pollen?

A. "Beautiful Innocence" -- a plant with a mutation in the class C genes. B. "Suspense" -- a plant with a mutation in the LEAFY gene. C. "Superhunk" -- a plant with a mutation in the class A genes. D. "Clockface" -- a plant with a mutation in the CYCLOIDEA gene.

Biology & Microbiology