Notifications
Clear all
0
23/09/2020 5:49 pm
Topic starter
Given below is a pedigree chart showing the inheritance of a certain sex-linked trait in humans.
(a) dominant X-linked
(b) recessive X-linked
(c) dominant Y-linked
(d) recessive Y-linked
1 Answer
0
23/09/2020 5:58 pm
(b) recessive X-linked
Explanation:
The genes for such traits are recessive and located on the X-chromosome. The character appears more often in males in hemizygous condition, but also in females with homozygous condition. Affected males receive their defective gene from carrier mothers who may have affected father. These exhibit criss- cross inheritance.