B1- Genes & Variation 0.0 / 5 ? Applied ScienceGenes & variationGCSEOCR Created by: Megan16BCreated on: 23-12-15 10:50 (1) What are the sex cells? Sperm & egg cell 1 of 8 (2) What happens when the sperm fertilises the egg? The 23 chromosomes in the sperm combine with the 23 chromosomes in the egg 2 of 8 (3) The two chromosomes in a pair always carry... the same genes 3 of 8 (4) And each gene is... Found in the same place on the two chromosomes 4 of 8 (5) What are alleles? Different versions of the same gene 5 of 8 (6) Do children get some of their alleles from each of their parents? Yes 6 of 8 (7) What does this result in? Children looking a bit like both of their parents 7 of 8 (8) Are the two chromosomes in a pair identical? No they are never identical because they have different alleles 8 of 8
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