Alleles - one of two or more alternative forms of a gene that arise by mutation and are found at the same place on a chromosome., Heterozygous - having two different alleles of a particular gene or genes., Homozygous - having two identical alleles of a particular gene or genes, Gamete - a mature haploid male or female germ cell which is able to unite with another of the opposite sex in sexual reproduction to form a zygote., Haploid cells  - a cell that contains a single set of chromosomes. The term haploid can also refer to the number of chromosomes in egg or sperm cells, which are also called gametes. In humans, gametes are haploid cells that contain 23, X chromosome - The X chromosome is one of the two sex chromosomes that are involved in sex determination. Female contains two X chromosomes., Y chromosome - The Y chromosome is one of the two sex chromosomes that are involved in sex determination. Males have XY chromosomes, Offspring - the young born of living organisms, produced either by a single organism or, in the case of sexual reproduction, two organisms., co dominance - phenomenon in which two alleles (different versions of the same gene) are expressed to an equal degree within an organism. As a result, traits associated with each allele are displayed simultaneously., pure breeding - A group of identical individuals that always produce offspring of the same phenotype when intercrossed.,

biology Heredity - Tot grade 10

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