A) transpozonlarning kochib otishini ta’minlaydigan ferment
B) organizm genomi tuzilishini ozgartiruvchi virussimon molekula
C) biror ahamiyatga ega DNK bolagi kiritilgan plazmid
D) t-RNK matritsa vositasida oz nusxasini sintezlovchi virussimon molekula