1.

Me what we'll be the propery of a careerRosals for colourblindness with a colour bundmate?

Answer»

Mendelian genetics.

Colour blindness is X- linked recessive.

So,

A colour blind female has two X chromosomes- both of which are recessive- XrXr

A colour blind male has one recessive gene and one normal Y chromosome- XrYn.

So any progeny of the above couple will be colour blind since colour blindness is decided by the X chromosome.

Combinations there of:XrXr- female colour-blindXrYn- male colour-blindXrYn- male colour-blindXrXr- female colour-blind

This mode of inheritance makes sure that females rarely are ever colour blind.



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