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Hydrogen bonds that link complementary DNA base pairs in the cell's nucleus break and exposes the bases.Free RNA nucleotides in solution combine with their complementary bases of the single DNA strand.A w...

INTRO: The key factors and variables during this period affecting women’s position were the family that they were born into, their marital status and societal position. These variables ch...

Ever since the accidental discovery of Penicillin by Alexandre Fleming in 1928, antibiotics have revolutionised modern medicine. Also known as 'anti-bacterials' they are used to treat often deadly bacteri...