Using visual observation of phenotypes to identify allele frequency rarely works because:
A. most alleles are recessive and will not
produce a visible phenotype.
B. phenotype is not due to the alleles.
C. multiple genes may control the phenotype.
D. visual phenotypes are rare.
E. phenotype is not an indication of genotype.
C
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When a woman breast-feeds, oxytocin causes the milk to move from the mammary glands toward the nipples. What other organ might also react when a woman breast-feeds right after giving birth?
A) uterus B) rectum C) thymus D) perilymph
The rapid appearance of animals in the fossil record occurred during the Ediacaran radiation
____________________ Indicate whether the statement is true or false.
The diploid portion of a plant life cycle is known as the:a
parental generation. b. sporophyte generation. c. daughter generation. d. gametophyte generation. e. reproductive generation.
The largest nematode parasite of humans is
A. Anisakis simplex. B. Ascaris lumbricoides. C. Enterobius vermicularis. D. Fasciola hepatica. E. Wuchereria bancrofti.