The inability of a man to produce LH would result in
A. the inability of Leydig cells to produce testosterone.
B. the inability of the anterior pituitary to produce FSH.
C. the loss of positive feedback control on FSH release.
D. decreased GnRH production by the hypothalamus.
E. exaggerated secondary sex characteristics.
A. the inability of Leydig cells to produce testosterone.
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About ____ percent of the human genome is
unique to each individual.
a. 0 b. 0.5 c. 1 d. 2 e. 5
In pea plants, the allele for purple flowers (P) is dominant to the allele for white flowers (p). In a cross between a purple-flowered plant and a white-flowered plant, all 73 of the offspring plants had purple flowers
Which cross would provide such results? A) pp × pp B) Pp × Pp C) PP × PP D) PP × pp
In bryophytes and some other plants, which of the following is a protective structure where sperm cells are formed?
a. archegonium b. strobilus c. stoma d. antheridium
Brown-air cities are so-called because
A. automobile exhaust is gray. B. of persistent fog. C. of excessive acid rain. D. the air pollutants undergo chemical reactions in sunlight.