Describe about non mendelian inheritance from the chapter genetics in biology.

The different types of non - mendelian inheritance are:

Co-dominance - when two or more alleles are expressed together then this is known as co-dominance. For example in blood group of human beings, A,B and O alleles express each other simultaneously and thus we have A,B and O blood groups.

Incomplete dominance : When two alleles are not expressed fully, for example in snapdragon one can find white, red and pink flowers.

Pleiotropy : when one gene affects two or more traits or characteristics for example in phenylketonuria

Polygenic inheritance : when two or more alleles control a single trait. For eg skin colour

Chromosomal aberrations : generic disorders because of improper meiosis or mitosis.