Which of the following statements about the two strands of a dna molecule is true?
the strands have identical base sequences.
an a base on one strand always pairs with a g base on the other strand.
the strands are a pair of sister chromatids.
the strands are connected to each other by sugar-phosphate bonds.
a t base on one strand always pairs with an a base on the other strand.

A T base on one strand always pairs with an A base on the other strand

The main role of dna in the  cell is the long-term storage of information. it is often compared to a blueprint, since it contains the instructions to construct other components of the  cell, such as  proteins  and rna molecules.the main function of rna is to carry information of amino acid sequence from the genes to where  proteins  are assembled on  ribosomes  in the  cytoplasm. mark brainliest, my work is good.