If there were six bases in DNA and still only 20 amino acids, how long would a codon need to be in order to specify an amino acid?

Maria wanted to grow a fern in her backyard. acting on a suggestion from a friend, she collected brown dots from the underside of a fern's leaves and then potted them. after a few days, maria saw small fern leaves erupting from the pot. which statement explains this phenomenon? a. the fern transitioned from gametophyte generation to sporophyte generation. b. the fern grew as a result of mitosis. c. the fern transitioned from sporophyte generation to gametophyte generation. d. the fern grew to be genetically identical to its parent plant.

The breakdown of food is accomplished by enzymes. a. physical b. chemical c. mechanical d. none of the above

What process creates gametes? a.fertilization b.mitosis c.meiosis