Sex influenced characters are due to
$Y$-linked genes
$X$-linked genes
Autosomal genes
$Y$-linked gene modification
Albinism is a congenital disorder resulting from the lack of the enzyme
Drosophila melanogastor has $8$ chromosomes in somatic cell. How many linkage groups will be there
Euphenics is
$XO$ type of sex determination can be found in:
Chromosomal theory of inheritance was proposed by