Which of the following scenarios refutes the argument that genes are entirely internally influenced? Patrick possesses a gene for brown hair, but his children have blond hair.
Charles possesses a gene for Alzheimer's, but he has not yet experienced symptoms.
Margaret possesses a gene for melanoma, so she chooses to stay out of the sun.
Cindy possesses a gene for freckles, but she uses makeup to cover them up.

answer; the correct answer is desert plants;

cuz he is really really short, assuming an unorthodox and inherently unlucky configuration of elevator buttons…

explanation:

the answer to the blank provided is “an autosomal gene that is required for the expression of genes on the x chromosome”.

testis-determining factor, abbreviated as td, which is more popularly known as sex-determining region y or sry protein, is a dna-binding protein or  gene-regulatory protein/transcription factor, encoded by the  sry gene. it is the gene responsible for the initiation of male gender determination in humans.