The skeleton that donald johanson discovered and named lucy bleonged to the ealest homind group called?
a. neanderthals
b. homo habilis
c. australopithecines
d. homo erectus

nb

explanation:

kj

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.