Charlie, an Angus bull, is heterozygous (Bb) for coat color, where B = black and b = brown. Charlie therefore has a black coat. Black is Charlie's
A) genotype.
B) heterozygous state.
C) gene conversion.
D) phenotype.
E) homozygous state.
D) phenotype.
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Which of the following pollutants could be reduced with the use of bioremediation?
A. heavy metals B. petroleum hydrocarbons C. halogenated organic compounds D. pesticides E. All of the choices are correct.
Which of the following structures is considered to be the pacemaker of the heart?
a. atrioventricular node b. sinoatrial node c. atrioventricular bundle d. Purkinje fibers e. intercalated discs
When phospholipid molecules are placed in water
A. the hydrophobic ends of the molecules exclude water from their surroundings. B. hydrophilic fatty acid ends mix well with the water. C. a single-layered membrane is formed. D. All of the choices occur.
Which viral family and representative disease contains single-stranded+ RNA and reverse transcriptase?
A) Paramyxoviridae (measles) B) Rhabdoviridae (rabies) C) Retroviridae (AIDS) D) Filoviridae (Ebola) E) Orthomyxoviridae (influenza)