A main strand of a DNA molecule in a protein coding region is transcribed along the following nucleotide sequence: 5' TACATTAAGCCG 3' . Assuming there is no stop codon in this DNA fragment, how many codons does this sequence contain

4 codons

Explanation:

In a DNA sequence, codons are in a set of 3 base pairs.

So, we can calculate the number of codons in the sequence by dividing the total number of base pairs by 3.

There are 12 base pairs in the sequence. Divide this by 3:

12/3

= 4

So, there are 4 codons in this sequence.

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these macromolecules could either be amino acids, proteins or nucleic acids. they are responsible for the chemical changes and reactions that affects largely the cell and its composition. take for instance the cytoplasm of the cell where these organelles are settled. these simple organelles are composed of macromolecules which ignites and catalyses different functions that enables cells, in macro-perspective in motion and metabolism. in intestines for example, metabolism happens and breaking down parts of a food to simpler compounds that are used and these nutrients delivered throughout the body and again broken down by into smaller components.