XO type of sex determination can be found in:
Held on 30 Apr 2022 · Verified 9 Jul 2026.
Birds
Grasshoppers
Monkeys
Drosophila
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With the help of given pedigree, find out the probability for the birth of a child having no disease and being a carrier (has the disease mutation in one allele of the gene) in $F_3$ generation. 
What is the pattern of inheritance for polygenic trait?
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Work through every NEET UG Principles of Inheritance and Variation PYQ, year by year.