1. TETRAD ANALYSIS by ORDERED TETRAD DATA

2. TETRAD ANALYSIS
To study the Segregation of chromosomes & Genes during meiosis using tetrad

3. ORDERED TETRAD DATA Studied in bread mould :fungus Neurospora crassa
ASCUS : Individual Haploid Product of meiosis in linear cylindrical structure in their order form
Single mitotic division follows meiosis , producing 8 haploid ascospores ( in Ascus)
Used for mapping

5. Generation (an ordered tetrad within an ascus )in N. crassa

6. SEGREGATION 4:4 pattern=1st Division segregation 2:2:2:2=2nd Division segragation

7. Life cycle of Neurospora

8. LINKAGES BETWEEN TETRAD

9. PARENTAL DITYPE
No cross over

10. TETRATYPE (single cross over)

11. NON-PARENTAL DITYPE
4-Strand double cross over