Allele - One form of a Gene. Each characteristic has two genes.
DNA - Deoxyribosenucleic acid. The Genetic code.
Double Helix - A word describing the structure of DNA.
Egg - The female sex cell, which id fertilized by the sperm.
Gamete - A sex cell Egg and Sperm in animals.
Gene - A strip of DNA coding one particular feature.
Heterozygous - Having two different Alleles for a single gene.
Homozygous - Having two identical Alleles for a single gene.
Inheritance - The passing of characteristics on from generation to generation through DNA.
Meiosis - Cell reproduction producing Gametes.
Mitosis - Cell reproduction producing two identical offspring cells.
Mutation - Random change in genetic code.
Nucleotide - A molecule which makes up DNA.
Punnet Square - Diagram showing probabilities of inheriting different characteristics.
Sexual Reproduction - Reproduction using the fusion of Gametes from two parents to create an offspring.
Sperm - The male sex cell, required for fertilisation of an egg.
Triplet - Sequence of three bases (A,T,C,G) found on a DNA strand.
Variation - A difference in genetic code.
Zygote - A fertilized egg.
Physics and Science Teacher
St. John's College Hamilton, NZ