genes - section of DNA that codes for a characteristic, DNA - basic building blocks that genes are made of, chromosome - found in the nucleus, a structure that carries genes, gamete - sex cells, sperm and egg, clones - formed from sexual reproduction, twins are an example of this, offspring - scientific word for baby or young, embryo - early stage of development, a ball of cells, inheritance - the passing down of genes from parent to offspring, nucleus - part of a cell that contains the genetic information, sexual - type of reproduction that leads to variety in offspring, Continuous Variation - Variation that can have any value between two points, Discontinuous variation - Variation that only allows a choice of a few values, Environment - An Organisms surroundings, Physical Environmental Factors - Non Living Environmental Factors, Characteristics - Features of an organisms, Environmental Variation - Variation caused by an organisms environment, An example of environmental Variation - Hair Style, Classification - The sorting of organisms into groups, Species - Smallest group of classification, Species definition - Individuals that can interbreed to produce fertile offspring, Inherited variation - Mixture of characteristics inherited from parents, Fertilisation - The fusion of two gametes to produce a zygote, Variation in Height - AN example of Continuous Variation, 46 - Number of human chromosomes, 23 - Number of Chromosomes in a gamete, XX - Female Chromosomes, XY - Male Chromosomes,

Inheritance KS3

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