Distinguish between: Linkage in Sweet Pea and Linkage in Drosophila.
(N/A)
| Linkage in Sweet Pea | Linkage in Drosophila |
| $(a)$ Demonstrated by Bateson and Punnett using flower color (purple/red) and pollen shape (long/round). | $(a)$ Demonstrated by Morgan using body color (yellow/brown) and eye color (white/red). |
| $(b)$ $F_1$ generation shows parental combinations of purple flower and long pollen. | $(b)$ $F_1$ generation shows parental combinations of yellow body and white eyes. |
| $(c)$ $F_2$ generation shows a phenotypic ratio of $7:1:1:7$ (for coupling phase). | $(c)$ $F_2$ generation shows a test cross ratio of $1:1$ (due to complete linkage). |
| $(d)$ Parental types are more frequent than recombinant types. | $(d)$ Parental types are significantly higher due to tight linkage. |
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