What type of evidence must molecular clocks be compared against to estimate the split from a common ancestor?
number of genes
O amino acid sequences
O fossil record
O DNA base sequences

it cools slower in the earth meaning the crystals have more time to form than lava on the surface

      n

both male and female gametes are produced by meiosis of the germ cells. therefore, both male and female gametes are haploid. one male and one female gamete unite during the fertilization to form the diploid zygote. in seed bearing plants, pollen grain is the male gametophyte, which produces sperm cells.