Oxygen first entered earth's atmosphere when one-celled organisms resembling modern cyanobacteria began to carry out the process of

a fossilization
b evolution
c photosynthesis
d erosion

Which statement is not an accurate description of meiosis? a) meiosis produces offspring that are genetically diverse. b) meiosis produces offspring that are identical to the parent. c) in sexual reproduction half of the genetic material comes from the father (sperm) and half of the genetic material comes from the mother (egg). d) meiosis decreases the number of chromosomes by half so that when a sperm fertilizes an egg, the resulting zygote has the correct number of chromosomes.