Help me pls or im going to fail

c.

Explanation:

Look closely, for key words. In most questions, they like to sneak hints in there but their quite hard to see! Hope it helps! :) I'm not always accurate.

biosphere

Explanation:

idk let me see fdfdgdg

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.