Mutations resulting from exposure to physical or chemical agents are called ________ mutations.
Fill in the blank(s) with the appropriate word(s).
induced
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A lacOc mutant would
A) never make lac structural genes. B) be constitutively expressed. C) bind receptor protein. D) have repressed expression. E) be able to be induced by lactose.
What are trinucleotide repeat expansions?
a. a mutation that creates malformed bases b. repair enzymes that correct nucleotide loops c. mutations that cause codon duplications d. mutations that cause DNA triple helixes
The main regulator of calcium blood levels is the ____
a. parathyroid glands b. thyroid glands c. hypothalamus d. anterior pituitary gland e. posterior pituitary gland
Why did Mendel choose pea plants to experiment on?
A. Offspring of pea plants are fertile. B. They have a number of different distinct traits. C. They are self-fertilizing. D. They have a relatively short life cycle. E. All of theses are reasons Mendel chose pea plants to experiment on.