Which best matches the description of genetic material? a. nucleotides form a helical structure that is called a gene b. chromosomes are located on the cytoplasm c. chromosomes create genes d. dna is located in the nucleus

The best description of the genetic material is D. DNA is located in the nucleus.

DNA ( deoxyribonucleic acid) is considered as the genetic material of all living organisms. It carries information from one generation to the next generation in the form of nucleotide sequences. It forms a double helical structure with the help of its two complementary strands. It is present in the nucleus of all eukaryotic cells and cytoplasm of all prokaryotic cells.

Thus, the correct answer for the genetic material is D. DNA is located in the nucleus

step 1: initiation

initiation is the beginning of transcription. it occurs when the enzyme rna polymerase binds to a region of a gene called the promoter. this signals the dna to unwind so the enzyme can ‘‘read’’ the bases in one of the dna strands. the enzyme is now ready to make a strand of mrna with a complementary sequence of bases.

step 2: elongation

elongation is the addition of nucleotides to the mrna strand. rna polymerase reads the unwound dna strand and builds the mrna molecule, using complementary base pairs. there is a brief time during this process when the newly formed rna is bound to the unwound dna. during this process, an adenine (a) in the dna binds to an uracil (u) in the rna.

step 3: termination

termination is the ending of transcription, and occurs when rna polymerase crosses a stop (termination) sequence in the gene. the mrna strand is complete, and it detaches from dna.