Which mutation would not cause a change in an organism's phenotype?

A silent mutation does not produce a phenotype change.

Explanation:

In point mutations, a base pair of the DNA sequence is altered. Within them, there are silent mutations, where the change of bases, generates a codon called synonymous.

For example:

AAC sequence ---> codes for Alanine

AAA mutated sequence ---> codes for Alanine

That is, it will not affect the protein under synthesis.

a tetrad is the foursome during meiosis made by two homologous chromosomes that have each already replicated into a pair of sister chromatids.

because the light is a great source of energy for the plants to survive. (i hope this )