Revision - Inheritance

04.05.2020
08:43:29
Science / grade 10 -Today’s topic for revision- Genetic diagrams- course book - pages 238 to 240.
Main points
Pedigree diagrams are similar to family trees and can be used to demonstrate how genetic diseases can be inherited.
They include symbols to indicate whether individuals are male or female and what their genotype is for a particular genetic characteristic.

Testcross:
The organism with the dominant trait is always crossed with an organism with the recessive trait.
If any offspring shows the recessive trait, the unknown genotype is heterozygous.
If the offspring has the dominant trait, the unknown genotype is homozygous dominant.






Homework worksheet is given on inheritance