GENETIC VARIATION: The Difference in the DNA Sequence of Individual offsprings from the Same parents or Same Species
HOW RANDOM FERTILISATION INCREASES GENETIC VARIATION:
INCREASING GENETIC VARIATION
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Diagram Showing the Fertilisation of an Egg Cell
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EXPLANATION:
When Two Sex Cells Combine to Form a New Diploid Cell (Zygote) at Fertilisation, this Results in Genetic Variation of the Offspring
This is because the Variation of the Sex Cells (Gametes) are Increased in Variation themselves as a Result of Meiosis
Variation is Further Increased as the Fusing of the Egg and Sperm is Random, Causing Every Human Being to be Genetically Different from Each Other (Except for Twins who are Formed from the Same Zygote)
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