Sickle cell disease is inherited as an autosomal recessive trait. The genotype of an individual with sickle cell disease is
A) homozygous dominant.
B) homozygous recessive.
C) heterozygous dominant.
D) heterozygous recessive.
B) homozygous recessive.
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Plants in general require how many essential
elements, both macro and micro, for their growth and survival?
a. 6 b. 12 c. 16 d. 22 e. 28
The Klamath-Siskiyou forest in southwestern
Oregon is endangered due to
a. logging. b. over-predation. c. plant diseases. d. introduced species. e. more than one of these.
Strictly speaking, mitosis is a division of the
a. nucleus. b. cytoplasm. c. chromosomes. d. nucleus and chromosomes. e. nucleus, cytoplasm, and chromosomes.
Reactivation of ________ in immunosuppressed persons may produce Kaposi's sarcoma, a cancer of the blood vessels
A) EBV B) HHV-6 C) cytomegalovirus D) HHV-8 E) BK virus