Describe how you right a scientific name?

The binomial system of nomenclature is structured so that the scientific name of a plant consists of two names. (1) the genus or generic name. and (2) the specific epithet or species names. There are rules to follow when writing a scientific name. The genus name is always underlined or italicized.

  like australopithecus afarensis; probably the direct ancestor of this group. africa: 5.8 to 4.4 million years ago. 

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.