CBSE · Class 10 · Science · Chapter 8

Heredity

Learn how traits pass from parents to offspring and how inherited variations contribute to biological change.

7 lessons 40 min
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Lessons in this chapter

  1. 1Accumulation of Variation During ReproductionEvery generation keeps the family recipe and adds a few tiny edits.
  2. 2HeredityBiology passes the blueprint forward without turning everyone into photocopies.
  3. 3Inherited TraitsEarlobes enter the classroom and suddenly percentages become hereditary detectives.
  4. 4Rules for the Inheritance of Traits – Mendel’s ContributionsMendel counted peas so carefully that genetics finally revealed its pattern.
  5. 5How do these Traits get Expressed?Genes do not wave magic wands; proteins and cell processes do the actual work.
  6. 6Sex DeterminationX and Y chromosomes settle the combination by chance, not by anyone’s choice.
  7. 7Chapter Summary and PracticeVariations, pea crosses and chromosomes return for one neatly organised finale.
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