A segment of DNA produces methionine, threonine, histidine, aspartate, and glycine when translated. A substitution mutation occurs and causes the synthesis of the segment as shown. New DNA Strand: 3' – TACAGGGTGCTACCCACT – 5' Which is the new peptide chain when the new DNA segment is translated?

AUGUCCCACGAUGGGUGA

Methionine- Serine- Histidine- Aspartate- Glycine- Stop

Explanation:

In gene expression, DNA, which is the genetic material is transcribed into mRNA, which is subsequently translated into a amino acid sequence (peptide). The transcription of DNA into mRNA follows complementary base pairing rule i.e. A-U, G-C, T-A.

The nucleotide sequence in the mRNA molecules are read in group of three nucleotide bases called CODONS. Each codon specifies an amino acid.

According to this question, a segment of DNA produces methionine, threonine, histidine, aspartate, and glycine when translated, however, a substitution mutation occurs and causes the synthesis of the segment as shown: 3' – TACAGGGTGCTACCCACT – 5'

The mRNA sequence from this mutated DNA sequence is as follows: AUGUCCCACGAUGGGUGA

During translation, the following codons specify the following amino acids:

AUG - methionine

UCC - Serine

CAC - Histidine

GAU - Aspartate

GGG - Glycine

UGA - Stop codon

Based on this, the new peptide chain when the new DNA segment is translated will be: Methionine- Serine- Histidine- Aspartate- Glycine- Stop

it has to be understood that the sea water contains a huge amount of sodium and chlorine ions and if they enter the cell of the atlantic cod fish, the cell will shrivel and the fish will die. to avoid such a condition, the fish uses active transport for the purpose of removing the ions against the gradient.

explanation:

the atlantic cod is not a maritime osmoconformer. its native application of salts is less than that of the seawater it lives in. it is continually falling water from the gills to the ocean via osmosis.

countering that, the fish is going to be swallowing seawater. but since its internal collection of salts is lower than seawater, the fish will want to go free of excess salt, and since that's going upon a gradient, then active transport, requiring energy, must be used to pump out the salt. much marine fish use the organs to filter out the salt and these fish discharge very straight urine.