Pedigree Analysis – With Tricks to Solve Different Pedigree
Human genome is very complex and it is not possible to obtain the expected 3:1 ration in inheritance pattern. Therefore, we use pedigree analysis to study inheritance pattern in humans. A pedigree is a pictorial representation of a family history, essentially a family tree that outlines the inheritance of one or more characteristics.
In this video, I have explained six types of inheritance patterns and how to identify them with simple tricks and tips.
- Autosomal Dominant – affected individual will always have at least one affected parent.
- Autosomal Recessive – affected individual will have unaffected parents and skipping of generation.
- X-Linked Dominant – affected father – all the daughters will be affected and no skipping of generation.
- X-Linked Recessive – affected mother – all the sons are affected, criss cross inheritance – grandfather to carrier daughter to grandson.
- Y-Linked Traits – affected father – only sons will be affected.
- Maternal Inheritance – affected mother – all the offsprings affected and affected father – none of the offsprings affected.
00:41 Introduction
06:32 Autosomal Dominant
09:42 Autosomal Recessive
13:12 X-Linked Dominant
16:43 X-Linked Recessive
21:04 Y-Linked Traits
22:14 Maternal Inheritance
24:08 Tips and Tricks for solving any type of pedigree analysis
26:53 Examples of how to solve pedigree using these tips
Learn more about Homozygous, Heterozygous and Hemizygous – What is the Difference?