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What are holandric genes?...

What are holandric genes?

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(i) The genes present in the non-homologous region of the Y chromosome are called Y - linked genes or holandric genes.
(ii) The Y - linked genes have no corresponding allele in X - chromosome.
(iii) These genes are transmitted directly from father to son, because males inherit the Y chromosome from the father.
(iv) Eg. Gene for Hypertrichosis (excessive development fo hairs on pinna of the ear).
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