Scientists found a fossil of an elephant in the African savanna. It has much longer tusks and is much
larger than elephant species presently inhabiting the area. This elephant fossil most likely
reveals *

c. establishing proper sleep hygiene

maybe because its impossible for balloons to lift a whole entire house.

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.