A new species of plant is found in the rainforest. How can genotyping help scientists to determine what the plant is?

you know they are heterozygous for a trait because they have it as jj or jj.

look at this it will give you up to 17 answers  

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.