Avirus that, upon infection of a host cell, makes a dna copy of its rna and inserts that piece of dna into the cell’s genome is called a(n)
a. prophage.
b. bacteriophage.
c. endospore.
d. retrovirus

The same agricultural practices are used in every country of the world. select the best answer from the choices provided t f

16. which of the following accurately describes a step within transcription? a. dna polymerase uses one strand of rna as a template to put together nucleotides. b. the dna strand is used as a template for which a complementary rna strand can be produced. c. the rna strand forms a template by which dna can be built. d. the rna strand is produced within the cytoplasm.

Which measure of an earthquake depends on how close you are to the focus?