polymerase cotton sequencing gene amplification pcr taq transcriptase dna modification endonuclease ligase nulease restriction enzymes disease resistance cotton leaf curl virus biotechnology biomagnification bioaccumulation environment pesticide self pollinated crops selfing and crossing barley calvin-benson dark reactions calvin cycle c3 photosynthesis breeding cotton selfing and crossing in cotton laws of inheritance genetics biology hatching animal husbandry frementation food science
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