Many children were paralyzed by polio in the 1950s. today, polio has been reduced by 99 percent. which statement best explains how this disease has been almost eradicated?

What is a gene ? a) a section of a protein that codes for dna. b) the alternate version of a trait. c) the visible trait in the f1 generation. d) a section of dna that codes for a specific trait .

Cells destroy body cells infected by a virus or bacteria.

What is the compliment dna strand to the following sequence: ttgactaggcta