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Genes, alleles and segregation

Genes, alleles and segregation

Homologous chromosomes with alleles at the same locus and a Punnett square for Aa by Aa showing 1:2:1 genotype and 3:1 phenotype ratios Inheritance is the passing of genetic information from parents to offspring. A gene is a length of DNA that codes for a polypeptide or a functional RNA, and different versions of the same gene are called alleles.

Inheritance Lesson

  1. A Level
  2. /Biology
  3. /Inheritance

Step-by-step lessons on Eduqas A Level Biology Inheritance. Each one builds up to exam-style questions. Build a strong foundation in cell biology and biochemistry early on, since later topics on genetics, ecology and physiology all draw on these core concepts.

Lessons