If a cell lacks transcription factors, ________ will never be transcribed
Fill in the blank(s) with correct word
mRNAs
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Why is malaria such an effective disease? What will be an ideal response?
The ABO blood types are controlled by
a. pleiotropy. b. multiple alleles. c. incomplete dominance. d. codominance. e. multiple alleles and codominance.
The persistence of the sickle-cell anemia allele in the
African population is the result of a. a high rate of mutation of the normal allele to the sickle-cell anemia allele. b. the advantage of the heterozygous form over the homozygous forms. c. nonrandom mating. d. a decline in the occurrence of malaria in Africa. e. genetic drift.
Individuals with Lesch—Nyhan syndrome exhibit
A) urine that turns black when exposed to air. B) compulsive self-mutilation behaviors. C) lighter than normal pigmentation of skin, hair, and eyes. D) severe anemia. E) a cherry-colored spot on the retina.