Answer:
The longest strand of DNA is the one that has descended the least in the electrophoresis gel. In other words, it is the one at the top of the gel.
Explanation:
Electrophoresis is a process that separates DNA according to its size and charge. The scientist puts the DNA samples into the indents at the top of a special gel. Then the person places it in a box that contains an ionic solution, a positive electrode at the bottom, and a negative electrode at the top. As the DNA has a negative charge, it will descend through the gel's pores towards the positive electrode. Since there are DNA of different lengths, the shortest goes down quickly through the gel than the large strands. As a result, the short strands of DNA will be at the bottom of the gel, the medium size strands will be in the middle of the gel, and the l<u>arge strands on the top of the gel</u>.
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The sequence of the mRNA that would result from transcribing a DNA template strand with the bases TACGCTAAT would be AUGCGAUUA.
<h3>What is transcription?</h3>
Transcription is the first stage of gene expression in which mRNA sequence is produced from a DNA template.
During transcription, the following applies to the DNA molecule being transcribed:
- Adenine base (A) is transcribed into Uracil (U)
- Guanine base (G) is transcribed into Cytosine (C) and vice versa.
- Thymine base (T) is transcribed into Adenine (A)
Therefore, the sequence of the mRNA that would result from transcribing a DNA template strand with the bases TACGCTAAT would be AUGCGAUUA.
Learn more about transcription at: brainly.com/question/14136689
