docx, 39.63 KB pdf, 117.29 KB docx, 39.03 KB pdf, 99.26 KB pdf, 179.17 KB This pack covers Edexcel specification points 3.19, 3.20 (a), 3.21, 3.22 and 3.23: that most phenotypic features are the ...
docx, 39.46 KB pdf, 118.44 KB docx, 38.94 KB pdf, 100.07 KB pdf, 385.76 KB This pack covers Edexcel specification points 3.4 and 3.6: DNA as a polymer made of two strands coiled to form a double helix ...
In simple terms: a mutation is a stable change in genetic sequence that can be copied when cells or viruses replicate. Most mutations have no detectable effect, some contribute to disease, and a small ...
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