MrBadmusSpring Second Half

Year 9 · Spring Second Half

Biology

3 lessons from 1 unit.

Unit B10 · lessons 1 to 3 of 5

Inheritance and DNA

Every one of your characteristics arrived from somewhere, and most of them arrived twice. This unit starts with the variation you can measure in a room full of people, works down through chromosomes and genes to the molecule the instructions are written in, follows how that structure was worked out, and ends with the question of what makes two organisms the same species at all.

  1. 01Variation: continuous and discontinuousInvestigationSome differences between people run along a smooth scale and others fall into separate groups. What decides which kind a characteristic is?Open this lesson
  2. 02Chromosomes, genes and DNAModelNucleus, chromosome, gene, DNA: people often use these four words as if they meant the same thing. How do they actually fit together?Open this lesson
  3. 03How we worked out DNA's structureInvestigationNobody has ever seen a DNA molecule directly. So how did anyone work out its shape?Open this lesson

Back to all three sciences this half term The whole KS3 Biology course