De Vries gave his mutation theory on organic evolution while working on:
Held on 30 Apr 2005 · Verified 9 Jul 2026.
Pisum sativum
Drosophila melanogaster
Oenothera lamarckiana
Althea rosea.
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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. 
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Work through every NEET UG Principles of Inheritance and Variation PYQ, year by year.