1. MAPPING by 3-POINT TEST CROSS

2. By: ARSH DIXIT Roll no – 626/14

3. MAPPING
To Find the Order and Distance between the GENES.

4. 3-POINT TEST CROSS
Cross between 3 Genes (Point ) be detected ,instead of 2-Point Test Cross
Double Cross Over (D.C.O.) between 3-Point Test Cross determined the position of CENTRAL LOCII change.

6. IDENTIFICATION (Progeny)
PARENTAL Genotype: Maximum Progeny
SINGLE CROSS OVER Genotype: Intermediate No. of Progeny
DOUBLE CROSS OVER Genotype : Least No. of Progeny

7. IDENTIFICATION (ORDER of Genes)
Comparison Parental Genotype & Double Cross Over Genotype
i.e; Parental Genotype form recombinants (change in central locii) & Double Cross Over occurs

8. SINGLE CROSSING OVER

10. Linkage Distance=No. of recombinant progeny*100
Recombinant Distance between Locii
Measured in MAP UNITS
Linkage Distance=No. of recombinant progeny*100
Total Progeny