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. suckling by young

b. hypothalamus

c. dopamine

d. trh

e. anterior pituitary

f. mammary glands

g. milk production