A part of an mRNA has the sequence GGA. Which change to the sequence would indicate a missense mutation

A replacement of a letter with different letter would indicate a missense mutation. (eg. GGA would become something like GCA and it would make something completely different).

Explanation:

A missense mutation is when the RNA replicates the instructions wrong from the DNA. When RNA is transcribed to make amino acids, it will make a completely different amino acid rather than the one that is needed/blueprinted. For example, if the sequence was AAG in the RNA (Derived from TTC DNA), it would create Lys amino acid. However, if the RNA sequence was AGG (Derived from abnormal TCC DNA), it would make Arg amino acid, which is different.

prism b but im not for sure

when the displaced particles are perpendicular to the direction the wave travels, is called a transverse wave, whereas in longitudinal wave the displace practices are parallel to the direction of the wave.

in the given image:

first image shows - longitudinal wave

second image shows - transverse wave

third image shows - longitudinal wave

fourth image shows - longitudinal wave