Restriction enzymes: Group of answer choices are sequence-specific DNA endonucleases that can cut anywhere. act at the membrane to restrict the passage of certain molecules into the cell. are highly specialized ribonucleases that degrade mRNA soon after its synthesis. are very specific proteases that cleave peptides at only certain sequen

not sure if this what   you'r looking for would be percent composition

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.