mRNA is a copy of template strand or non-template strand
mRNA is a copy of the non-template strand.
mRNA, or messenger RNA, is a copy of the non-template strand of DNA during the process of transcription. In transcription, the DNA double helix unwinds, and an enzyme called RNA polymerase binds to the DNA template strand. RNA polymerase then synthesizes a complementary strand of RNA, using the non-template strand as a template. This newly synthesized RNA molecule is the mRNA, which carries the genetic information from the DNA to the ribosomes for protein synthesis.
mRNA, or messenger RNA, is a transcript of a DNA sequence that is synthesized during a process called transcription. It carries the genetic information from the DNA to the ribosomes, where it is used as a template for protein synthesis.
To answer your question, mRNA can be considered as a copy of the non-template strand, also known as the sense strand or the coding strand. The non-template strand has the same sequence as the mRNA, except for the substitution of thymine (T) with uracil (U) in the mRNA.
During transcription, an enzyme called RNA polymerase reads the DNA double helix and synthesizes the complementary mRNA molecule. It recognizes the non-template strand and assembles the mRNA by pairing complementary RNA nucleotides with their DNA counterparts. Adenine (A) in DNA pairs with uracil (U) in RNA, cytosine (C) pairs with guanine (G), and guanine (G) pairs with cytosine (C).
So, while the template strand is the one used as a template for mRNA synthesis, the resulting mRNA is essentially a copy of the non-template strand.