a segment of dna has the sequence atgcct. what mrna sequence will be produced by transcription
To determine the mRNA sequence that will be produced by transcription, we need to understand the process of transcription itself.
Transcription is the process by which the DNA template is used to synthesize mRNA molecules. During transcription, an enzyme called RNA polymerase binds to the DNA template and "reads" the sequence, then synthesizes an mRNA molecule that is complementary to the DNA.
In DNA, the nucleotide bases are adenine (A), thymine (T), cytosine (C), and guanine (G). However, in mRNA, thymine (T) is replaced by uracil (U). So during the transcription process, the complementary bases are used to synthesize the mRNA strand.
In the given DNA sequence "ATGCCT," we need to replace thymine (T) with uracil (U) to get the mRNA sequence. Therefore, the mRNA sequence produced by transcription of the given DNA segment is "AUGCCT" since adenine (A) still pairs with uracil (U), guanine (G) pairs with cytosine (C), and cytosine (C) pairs with guanine (G).