Drosophila melanogaster (fruit fly) can be used to illustrate simple Mendelian ratios and linkage in Genetics.Our Drosophila large value pack contains:1 x large stock cultures of Wild Type Drosophila melanogaster produces 200+ flies1 x large stock culture of White Eye Drosophila melanogaster produces 200+ flies20 x breeding tubes containing food.Instruction leaflet included.Also available as a small value pack (B8A03530).