| Description | Slide shows two diagrams of the 'translocation between 'x' and 'y' chromosome ('y' with male fertility factor)' of the fruit fly.
Title above diagrams reads: 'translocation between 'x' and 'y' chromosome ('y' with male fertility factor)'. Diagrams are labelled 'p' and 'f1'.
Title below image reads: 'Fig 19. - two strains of Drosophila melanogaster that produce sterile male hybrids when crossed. X - chromosome, stippled; Y- chromosome, dotted. Upper left, normal female; upper right, male from the translocation strain; below, the hybrids. F, fertile; ST, sterile. (From Stern).' |