During embryo screening, a technician tests the genetic material of the embryo to find out which alleles are present. The genetic material is made up of large molecules of a chemical substance.
Name this chemical substance.

Nucleic Acid

Explanation:

NUCLEIC ACIDS are naturally occurring chemical compounds that serve as the primary information-carrying molecules in cells and makeup the genetic material. Nucleic acids are found in abundance in all living things, where they create, encode, and then store information of every living cell of every life-form on Earth.

the electromagnetic energy from the sun arrives in the form of visible and invisible light.

when it is at an intermediate population density