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| The part of the cell which contains the genes |
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| alternive forms of the same gene.for example,the gene controllingflower colour in pease has white and yellow allsles. |
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| a substance produced by white blood cells in response to infection. it finds disease-causing organisms so they can be destroyed by specail cells called phagocytes. |
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| a groupof plants and animals wich liveand interact together |
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| reproduction in which genes are passed on from only one parant. |
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| the basic unit of life consisting of a necleus and cytoplasm swurr |
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| the four bases-adenine, cytosine, guanine, and thymine- make up the rungs of the dna ladder. in dna the bases pair with each other allways pairs wih t and c allways pairs wih g |
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