Why are stop and start codons signals necessary for protein synthesis

The start and stop codons —part of the mRNA's genetic code— are necessary because they indicate the exact length a protein should have.

Explanation:

The sequence of bases contained in an mRNA strand is the genetic code that allows the synthesis of specific proteins.  The mRNA information is organized into triplets or codons, whose function is :

The importance of the start and stop codons is that they establish the exact length that, genetically established, a specific protein must have.

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answer: collecting information/data

reason: the student is going around and asking people questions to collect data

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answer: ice crystals in air

the water from the water body or another source of water gets evaporated as water vapor as an effect of heat on water. these water vapor rises in the upper layers of the earth atmosphere under high atmospheric pressure. the atmospheric pressure of these water molecules starts to decrease due to the effect of cold air. the invisible water vapor condenses into visible water droplets and ice crystals.these ice crystals and water droplets being less denser than the surrounding air floats on air as clouds.