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Meiosis School

asexual reproduction reproduction that does not involve the union of gametes and in which a single parent produces offspring that are genetically identical to the parent
sexual reproduction process in which the sex cells from two parents combines to produce offspring that share traits from both parent
pedigree a diagram that shows the occurrence of a genetic trait in several generations of a family
fertilization a cell formed by a union of two gametes
carrier a person who has one recessive allele for a trait and one dominant allele, by does not have the trait
egg a sex cell produced by a female
sperm the male sex cell
homogolous chromosome chromosomes that have the same sequence of genes and the same structure
meiosis a process in cell division during which the number of chromosomes decreases to half the original number by two division of the nucleus, which results in the production of sex cells (gametes or spores)
chromosomes in a eukaryotic cell, one of the structures in the nucleus that are made up of DNA and protein; in a prokaryotic cell, the main ring of DNA
internal fertilization fertilization of an egg by sperm that occurs inside the body of a female
external fertilization the union of sex cells outside the bodies of the parents
gamete a mature sexual reproductive cell having a single set of unpaired chromosomes
zygote a fertilized egg
diploid a cell that contains two haploid sets of chromosomes
haploid an organism or cell having only one complete set of chromosomes
sex chromosomes a sperm or an egg cell
sex-linked gene a gene that is carried on the X or Y chromosome
selective breeding The process of selecting a few organisms with desired traits to serve as parents of the next generation
inbreeding the act of mating closely related individuals to fix desirable characteristics and eliminate unfavorable characteristics
hybridization to produce hybrids by mixing different species or varieties of animals or plants
co together
hetero other
homo same
geno to become
pheno to show
karyo nucleus
re back, again