a male and a female sex cell are required to perform sexual reproduction & each sex cell provides half the number of chromosomes in a fertilized egg through sexual reproduction -> a woman part room provide whole the alphabet of temperatures and a son spectrum room provides whole the alphabet of opening in a fertilized hatched through sexual original a male sex cell provide half the number of chromosomes and a female sex cell provides half the number of chromosomes in a fertilized egg through sexual reproduction  a male sex cell provide half the number of chromosomes and a female sex cell provides half the number of chromosomes in a fertilized egg through sexual reproduction & if two things provide half of something to something else, then that something else will recive a full amount of that something -> a fertilized hatched recives a part rise of forests through sexual original a fertilized egg recives a full set of chromosomes through sexual reproduction  a fertilized hatched recives a part rise of forests through sexual original & fertilization is when an egg cell becomes fertilized -> new cells with a full set of chromosomes are formed by fertilization