Which statement explains why the gene of a frog may be inserted into a bacterial chromosome. A. nucleotides are the basic units of DNA for all organisms.
B. DNA forms purines and pyrimidines in all organisms.
C. one DNA allele produces one enzyme in all organisms.
D. DNA has equal amounts of asinine an thymine for all organisms.

Consider the last statement in the prompt: "people take such environmental factors into account in their choices when deciding where to live." do all people have a choice as to where they live? what factor plays a key role in this decision and may therefore play a large role in determining quality of life?

Which of the following is true of microbes? a. ninety-nine percent of all microbes are pathogenic.b. gene expression in bacteria is very similar to gene expression in humans, which facilitates the use of bacteria in recombinant biotechnology and gene therapy.c. all bacterial enzymes are harmful to humans and the environment.d. microbes create pollutants and toxins that harm the environment.

Most crimes involve some evidence relating to the human body; for that reason, what related science is frequently used in forensic investigations? a)psychiatry b)physics c)botany d)biology