When scientist take the genes of two different species and combine them we call this

Answer

Biologically, mixing genes of animals from different species to make a new specie is science fiction.

Explanation

Animals from different species cannot mix genes to produce new specie. For example a cat and a dog are from different species thus their genes cannot communicate to understand each other. This is to say there is no animal which is a cat-dog. However, closely related animals (donkey and horses) genes could be combined to form a mule which is infertile. However, hybrids are formed when DNA molecules from two different organisms join through a process called recombinant DNA.

the sugar-phosphate backbone forms the structural framework of nucleic acids, including dna and rna. this backbone is composed of alternating sugar and phosphate groups, and defines directionality of the molecule.