Sugar-phosphates and nucleotides
The correct answer is D. for sure.
A dichotomous key is two paired sentences that have contrasting characteristics. That's all i know
The PAX-6 gene is a gene that translates to the PAX-6 protein that serves as a transcription factor needed to activate certain genes that functions in the development of the eyes. While PAX-6 gene may look like it produces different functions for different species (such as formation of the compound eye in insects vs. formation of a single lens eye in vertebrates), it does not. It does in fact only regulate the genes required for the formation of the eyes. Absence or mutation of the PAX-6 gene will cause aniridia or absence of the iris, opaque lens and cornea, and a dysfunctional retina. Also, the function of the PAX-6 protein is conserved throughout evolution of species.
Cheerios that lower cholesterol. They want you to buy more of their product since you think it's good for you. A few scientific studies have shown some correlation between the oats and fewer heart attacks.