Punnett squares | DNA, genes and inheritance | meriSTEM
Channel: meriSTEM Education
Date: 07/05/2023

This video is part of the Year 11 and 12 genetics series - DNA, Genes and Inheritance https://bit.ly/meriSTEMgenetics.

In this video you will learn how to use the mendelian genetics tool, the punnet to predict the genotype (homozygote and heterozygote) and phenotype ratios of F1 generation and F2 (1:2:1) generation offspring.  A real-life example of of a cross between two cystic fibrosis CFTR carriers is explained and used to demonstrate that there is 25% chance progeny being afflicted and 50% chance that progeny will carry the faulty gene.

For practice questions after each video, register an account to access our free senior science courses at https://courses.meristem.anu.edu.au. Teachers can access free lesson plans and in-class activities by joining our teacher community via https://meristem.weblogs.anu.edu.au/index.php/new-to-meristem/teacher-registration.

This video is part of meriSTEM Australian senior science educational resources (CC BY-NC-SA 4.0). Email the team (contact.meristem@anu.edu.au) for further information, course access and curriculum links.