Class 10 Science | Chromosome

Science and Technology, Grade 10 · Unit 4

Chromosome

Structure and genes · 46 chromosomes · Sex determination

By the end of this lesson you can

🧬

Describe a chromosome and its parts

🔎

Say what a gene is and does

⚖️

Tell autosomes from sex chromosomes

👶

Explain sex determination with a chart

Body: many cells

Cell: has a nucleus

Nucleus: holds chromosomes

Chromosome: DNA and protein

Gene: a small piece of DNA

The notes are free to read in full.

Presenter notes: Today we look at the thread-like bodies hidden in every cell, which decide how we look and whether a baby is a boy or a girl.