GCSE level School Biology Notes: Sex-linked genetic disorders, inheritance of blood groups

Use page sub-index, take time to study content, follow links or [Use the website search box] re-edit 14/05/2023

More Complex genetics: Sex-linked genetic disorders - colour blindness and haemophilia and non-sex-linked inheritance of blood groups

 This page will help you answer questions such as ...  

Explain what a sex-linked genetic disorder is?  

What is the main difference between an X and Y chromosomes? 

What causes colour blindness? 

How many alleles control your inherited blood group?   

Can you draw a genetic diagram to show how a sex-linked disorder is inherited?


Sub-index for this page

(1) Introduction to sex-linked genetic disorders

(2) Colour blindness - a sex linked genetic disorder

(3) Haemophilia - a sex linked genetic disorder

(4) The inheritance of blood groups (not sex-linked, example of codominance)

(5) Huntington's disease, not sex-linked

(6) Down's Syndrome and genetic screening for genetic abnormalities

and Lots more links to my genetics pages


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