Which plants are planted to increase the amount of nitrogen in the soil?
a. evergreens
b. legumes
c. mints
d. grasses
e. corn
ANSWER: b
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The diagram below represents a protein electrophoresis gel with samples from six individuals tested for variants (alleles A and B) of a single protein. What are the genotype frequencies?
A. 33.3% A, 66.6% B B. 75% A, 25% B C. 25% B, 75% A D. 66.6% A, 33.3% B E. Can't determine the frequency from this information.
Inactivated vaccines typically require booster shots
Indicate whether this statement is true or false.
A genetic abnormality that may result in sterile
males with some mental impairment or breast enlargement is a. XXY. b. XYY. c. Turner syndrome. d. Down syndrome. e. none of these.
Pseudohypertrophic muscular dystrophy is a human disorder that causes gradual deterioration of the muscles. Only boys are affected, and they are always born to phenotypically normal parents
Due to the severity of the disease, the boys die in their teens. Is this disorder likely to be caused by a dominant or recessive allele? Is its inheritance sex-linked or autosomal? A) dominant, sex-linked B) recessive, autosomal C) recessive, sex-linked D) incomplete dominant, sex-linked