Which of the following is the genetic condition
observed in the middle person from the above figure?
a. Huntington disease
b. acondroplasia
c. triple recessive condition
d. galactosemia
e. all of these
Answer: b
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Certain properties of water—its cohesion, surface tension, and resistance to temperature change—are all:
A. a function of the partial negative charge on the H atoms of a water molecule. B. a function of the hydrogen bonds within a water molecule. C. a function of the hydrogen bonds between water molecules. D. a function of the non-polar covalent bonds between the H and O atoms within a water molecule.
A fungus is recovered from a nail scrapping. Microscopic examination reveals numerous smooth, thin-walled, club-shaped, multiseptate macroconidia; however, microconidia are absent. The or-ganism can be identified as:
a. Microsporum canis. b. E. floccosum. c. T. rubrum. d. M. gypseum.
What occurs at the bridge step?
a. The formation of succinyl CoA b. The production of GTP c. Decarboxylation of pyruvic acid d. The formation of oxaloacetate
The neutral theory of molecular variation posits that:
a. most mutations are neutral. b. most substitutions are neutral. c. most mutations are deleterious. d. B and C. e. All of the above.