How does the meiosis, contributes to the process of evolution?

multi-cellular species the individual starts the life-cycle as a single cell (the ovum) with a single complete set of chromosomes (in humans 22 and an X). The ovum waits for the next stage, a body. This requires a doubling of the set for the ovum to make body cells. A sperm brings the second, single and matching set at fertilization (sometimes a Y matches the first X). Some time after the zygote starts to divide by mitosis to make organs, some cells become oocytes and make new ova by reducing the doubled set back to a single set.

Meiosis transforms a diploid cell into four haploid granddaughter cells, each having a single copy of each chromosome. The process helps increase the genetic diversity of a species.

Explanation:

water is a polar molecule. a chemical bond is a force of attraction between atoms or ions. bonds form when atoms share or transfer valence electrons. atoms form chemical bonds to achieve a full outer energy level, which is the most stable arrangement of electrons. so, false

explanation:

in h2o molecule, two water molecules are bonded by a hydrogen bond but the bond between two h - o bonds within a water molecule are covalent. the greater the electronegativity difference, the more ionic the bond is. bonds that are partly ionic are called polar covalent bonds. nonpolar covalent bonds, with equal sharing of the bond electrons, arise when the electronegativities of the two atoms are equal.