What holds the sides of the dna ladder together?

Based on the data in your tables, did the light-colored moths have a higher or lower survival rate after the industrial revolution?

Cells destroy body cells infected by a virus or bacteria.

Recombinant dna (rdna) creates offspring which are genetically identical to the parent is the process of breeding only organisms with desirable traits involves the removal of the nucleus of a cell combines genes from organisms of different species in a lab