Edexcel OLevel Biology revision notes

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Lesson

Lesson-3.2.6- understand how genes exist in alternative forms called alleles which give rise to differences in inherited characteristics.

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Lesson-3.2.5- describe the stages of protein synthesis including transcription and translation, including the role of mRNA, ribosomes, tRNA, codons and anticodons.Previous Lesson-3.2.7- understand the meaning of the terms: dominant, recessive, homozygous, heterozygous, phenotype, and genotype.Next