Which autosomal recessive condition results in accumulation of phenylalanine?
a. cystic fibrosis
b. PKU
c. Tay-Sachs disease
d. Marfan syndrome
e. achondroplasia
ANSWER: b
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The principle of parsimony states that
a. the simplest pathway is most likely correct. b. complexity is the key to truth. c. the more members there are in the clade, the more likely it is a true clade. d. derived characters are those shared by ancestral groupings. e. most answers are incorrect
Spermatogenesis takes place in which of the following structures?
a. seminiferous tubules b. seminal vesicles c. prostate gland d. bulbourethral glands e. glans
The encysted larva of the beef tapeworm is called a
A) redia. B) cercaria. C) cysticercus. D) metacercaria. E) proglottid.
In the noncyclic electron pathway, electrons are energized in ____ before they enter ____
What will be an ideal response?