Answer :
DNA molecule carries the genetic instructions for the physical characteristics of living organisms.
The linear arrangement of nucleotides in DNA contains genetic information. A hydrogen bond between the G-C and A-T base pairs holds each DNA molecule's two complementary strands of nucleotides together to create a double helix. By using one DNA strand as a template for the production of a complementary strand, the genetic code is duplicated. The blueprints for all the proteins an organism will ever produce are encoded in its DNA, which is its genetic code. DNA is found in eucaryotes in the cell nucleus.
The nuclear envelope enables the numerous DNA-interacting proteins to concentrate where they are needed in the cell, as we will see in the next chapters.
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