Biology Edexcel Revision Hope this helps just as it helped me for my revision!!! Hope you like it!!! Thanks 0.0 / 5 ? BiologyVariation and reproductionGCSEEdexcel Created by: JBajCreated on: 21-07-14 12:36 What is a gene? A gene is a short piece or strand of DNA at a particular point on a chromosome. Remember as :- It is the coding for chracteristicts 1 of 5 What is a phenotype? This is the physical characteristics that are produced such as eye colour. 2 of 5 What does hetrozygous mean? This is when there is one dominant allele and one recessive allele (Cc). This shows that the individual is a carrier 3 of 5 What are the two types of variation? Genetic Variation + Environmental Variation 4 of 5 What does the first variation mean? This is where individuals or organisms might inherit characteristics from their ancestors or parents. 5 of 5
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