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| Column $X$ | Column $Y$ |
|---|---|
| $(1)$ Worker | $(P)$ Sterile female |
| $(2)$ Queen | $(Q)$ Fertile female |
| $(3)$ Drone | $(R)$ Fertile male |
| $(4)$ Hilsa | $(S)$ Edible marine fish |
| List-$I$ | List-$II$ |
| $(a)$ Cross-breeding | $(1)$ Apis indica |
| $(b)$ Interspecific hybridization | $(2)$ Blue Revolution |
| $(c)$ Honey bee | $(3)$ Mule |
| $(d)$ Fisheries | $(4)$ Hisardale |
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