What are the basic cell structures?

The cell membrane, the nucleus, and  the cytoplasm. Hope this helps...

the backbone of the dna and rna compound is sugar phosphate.

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.