Level 4 · Science S4.2
Genes and inheritance
How the instructions for a living thing are written, copied and passed on.
Follow the instructions of life from the cell down to the DNA, learn how they are copied and shared out, and use crosses and family trees to predict what is passed on. Then see why living things vary, how a change in a gene happens, and how people move genes between species.
8 chapters. Your place is kept on this device only.
You are ready for this book if
You can explain what happens when a sperm cell joins an egg cell.
- One step up S5.1 Molecules and cells
- This book S4.2 Genes and inheritance
- One step down S3.2 Ecosystems
Contents
- 1DNA, genes and chromosomes, readunderstood
- 2The structure of DNA, readunderstood
- 3Meiosis and sex cells, readunderstood
- 4Boy or girl: X and Y, readunderstood
- 5Dominant and recessive, readunderstood
- 6Family trees and genetic disorders, readunderstood
- 7Variation, readunderstood
- 8Mutation and genetic engineering, readunderstood
Keep it, print it, pass it on
- One file for any phone
873 KB. Opens with no internet. Share it with anyone. - PDF to print
766 KB, 92 A4 pages. Answers at the back. Copies well in black and white. - EPUB for reading apps
144 KB. For e-readers and book apps.
For parents and teachers
For learners who can follow a written argument and have met cells and the idea that babies come from a sperm and an egg. In many schools this fits learners of about 14 to 16, and older learners can use it as a reference. Each chapter takes two or three short sessions. A learner can work alone: every exercise has its answer and the reason for it. The Try it activities use paper, string and a ruler. Nothing is heated and nothing is tasted. Two chapters name real inherited conditions and talk about sex and families. They give facts calmly and judge no one. For the chapter on hand spans, the learner measures family and friends, so ask each person first.
Strand: Living things. Written and drawn by attnom. Free to read, print and share.