egrep (which is the same as grep -E) treats +, ?, |, (, and ) as meta-characters. In basic regular expressions (with grep), the meta-characters ?, +, {, |, (, and ) lose their special meaning. If you want grep to treat these characters as meta-characters, escape them \?, \+, \{, \|, \(, and \).
Plants, fungi, and some protists also perform meiosis. In plants, meiosis creates a multicellular haploid organism, called a gametophyte , which in some groups is independent of the diploid plant. Gametes are produced by mitosis of the gametophyte, which then fuse to form the embryo. This cycle is called alternation of generations. Meiosis involves two divisions.
Four haploid cells are produced from one parent cell. Â© John C. Glase. A haploid cell is a cell that contains one complete set of chromosomes. Our sex cells (sperm and eggs) are haploid cells that are produced by meiosis.our haploid cells are produced from one parent cell. Â© John C. Glase. A haploid cell is a cell that contains one complete set of chromosomes. Our sex cells (sperm and eggs) are haploid cells that are produced by meiosis.