19. What are holandric genes?

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Holandric genes are genes in
the nonhomologous region the Y
chromosome. Holandric condition
phenotypes that emerge in men
since individuals the female sex do
present in their X
genes from the nonhomologous
of the Y chromosome ( only in
men). A known holandric gene is
one that conditions hypertrichosis
(hair in the ears), phenotype
inherited from fathers sons through
the Y .