The mediastinum separates: a. The thoracic cavity into right and left parts.

b. The thoracic cavity from the abdominal cavity.
c. The thoracic cavity from the pelvic cavity.
d. The abdominal cavity from the pelvic cavity.
e. The abdominal cavity into right and left parts.

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.

answer; lower are;

answerblank(1) epidermis; blank(2); dermis;