Which type of drug would be useful in dilating the pupils for an examination of the retina?

Muscarinic receptor inhibitor is the drug that is useful in dilating the pupils for the examination of the retina.  Small yellowish-white lesions located between the retinal pigment epithelium and Bruch's membrane are known as drusen. 

your answer should be c) enjoy!

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.