Which type of genetic testing is the most sensitive method for detecting any mutation in a specific gene? select one: a. fluorescence in situ hybridization b. direct dna sequencing c. banded chromosomal analysis d. immunohistochemistry?

Direct DNA sequencing

Explanation:

Direct DNA sequencing may be defined as the molecular technique to determine the specific nucleotide sequence in a DNA molecule. This technique has been used in molecular biology and virology.

Direct DNA sequencing technique is beneficial to determine the mutation in a specific gene. The normal gene sequence can be easily compared with mutated gene sequence.

Thus, the correct answer is option (b).

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.