Genetics

• Biology · Genetics Gene mutation and its effect on the polypeptide Edit one nucleotide on the template strand: substitution, insertion or deletion. The simulation re-runs transcription–translation and... Ages 17–18
• Biology · Genetics Hardy–Weinberg equilibrium, selection and genetic drift A randomly mating population with two alleles A and a: genotype frequencies p², 2pq and q² are calculated and plotted every generation... Ages 17–18
• Biology · Genetics Gene linkage – crossing over and genetic mapping Two genes sit on the same chromosome: drag the distance between them to change the recombination frequency and watch the ratio of the... Ages 17–18
• Biology · Genetics Dihybrid cross: independent assortment, gene linkage and crossing over A two-gene Punnett square shows each parent's gametes and their frequencies, cells colour-coded by phenotype, and genotype–phenotype... Ages 17–18
• Biology · Genetics Transcription, translation and point mutations From a gene's template strand, RNA polymerase builds mRNA one nucleotide at a time by base-pairing (A–U, T–A, G–C, C–G); the ribosome... Ages 17–18

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