The lacZ gene encodes
A. ampicillin-resistance protein.
B. aromatase.
C. glucose dehydrogenase.
D. lactose.
E. ?-galactosidase.
Answer: E
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Mutation rates of human genes are expressed as the number of ____
a. nucleotides substitutions per gene b. frameshift mutations per genome c. mutated alleles per genome d. induced mutations per generation e. mutated alleles per gene in each generation
A researcher decides to test the scientific validity of the common phrase “An apple a day keeps the doctor away.” What would be a valid hypothesis to investigate this specific question?
A. Eating apples decreases the frequency of contracting a cold. B. The daily consumption of a single apple does not change the number of visits to the doctor. C. Eating one apple every day is good for you. D. Apples are high in vitamin C. E. Those who consume apples have longer lifespans than those who do not consume apples.
Mendel's model organism for studying inheritance was the garden pea. What are the advantages of using peas to study genetics?
_____ Garden peas are available in many varieties. _____ Garden peas have a short generation time. _____ Garden peas produce a large number of offspring with every mating. _____ Mating between garden peas can be carefully planned and controlled.
What are the function of the hydrochloric acid produced by the stomach
What will be an ideal response?