What is genetic drift? a. random gene pool changes in small populations b. mixing of genes from two parent organisms c. movement of alleles resulting from migration d. new allele formations through recombination

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.

Which of the following produces carbon dioxide? a. plants b. animals c. decomposers d. all of the above

Which two criteria must be met before scientist can use radiocarbon dating? explain your answer