What is the process by which a bacterium switches from a lysogenic to lytic cycle?
What will be an ideal response?
induction
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Color vision depends on dominant alleles of three different genes: the R gene and the G gene, both on the X chromosome, and the B gene, which is autosomal. Recessive mutant alleles of any one of these three genes can cause color blindness in homozygotes. Suppose a color-blind man marries a color-blind woman and all their offspring have normal vision. What is the genotype of the woman?
A) RR GG bb B) RR gg BB C) rr GG bb D) RR gg BB or RR GG bb E) rr GG bb or rr gg BB
Which of the following is false concerning the atom
in the figure? a. The number of protons and the number of electrons are equal. b. It has an atomic mass of 4. c. Electrons are moving around the nucleus. d. It has an atomic number of 2. e. The number of electrons exceeds the number of protons.
"P" is the chemical symbol for
A. nickel. B. potassium. C. plutonium. D. phosphorus. E. copper.
Which of the following terms best describes an organism that cannot exist in the presence of oxygen:
a. obligate aerobe b. facultative aerobe c. obligate anaerobe d. facultative anaerobe