What are the modes of genetic inheritance?

Genetic conditions can be passed on from parent to offspring in a number of different 'patterns;' these are the modes of inheritance.

In autosomal dominant conditions, only one mutated copy of the gene is required for the person to be affected.

In autosomal recessive conditions, two mutated copies of the gene are required for the person to be affected. Those individuals carrying one mutated copy of the gene are carriers.

In X-linked dominant conditions, only one mutated copy of the gene (that is located on the X chromosome) is required for the person to be affected.

In X-linked recessive conditions, two mutated copies of the gene (that is located on the X chromosome) are required for the person to be affected.

Answered by Antoinette Y. Biology tutor

4682 Views

See similar Biology A Level tutors

Related Biology A Level answers

All answers ▸

How does a vaccine lead to the production of antibodies against a virus?


How to we acquire monoclonal antibodies


Explain how blood glucose concentration is controlled in the body


Explain how restriction endonucleases are used to form recombinant DNA plasmids.


We're here to help

contact us iconContact usWhatsapp logoMessage us on Whatsapptelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

© MyTutorWeb Ltd 2013–2025

Terms & Conditions|Privacy Policy
Cookie Preferences