QUIZE

https://generalagriculture01.polldaddy.com/s/mock-testhttps://generalagriculture01.polldaddy.com/s/mock-test

Some ratios

s.no	name	Ratio	Test cross ratio
1	simple	9:3:3:1	1:1:1:1
2	Recessive /supplementory	9:3:4	1:1:2
3	Dominant epistasis/masking	12:3:1	2:1:1
4	inhibitory	13:3	3:1
5	Duplicate recessive/ complementory	9:7	1:3
6	Duplicate dominance	15:1	3:1
7	Polymeric/additive	9:6:1	1:2:1
8	Polygenec inheritance	1:4:6:4:1(15:1)
9	linkage Coupling phase	7:1:1:7
10	linkage Repulsion phase	1:7:7:1

Some important formula

S.no	For	Formula
1	Number of different gametes	2n (n=no of heterozygots)
2	No. Of individual in the perfect F2 population	4n
3	No of different genotype in F2 population	3n
4	No. Of different homozygous genotype in F2	2n
5	No. Of different heterozygous genotype in F2	3n-2n
6	No of different phenotype in F2	2n
7	No of linkage group	n (haploid)
8	No of bar body	x-1
9	No of primary trisomy	n(haploid)
10	No of secondary trisomy	2n