Which statement best describes both dna and rna?
a. they both contain the base uracil.
b. they are both double-stranded.
c. they are both polymers composed of nucleotides.
d. they both contain a great variety of nucleic bases.

Is there any solid scientific evidence that humans have been cloned?

You are given an electron micrograph of a bacterial cell. in the micrograph you can clearly see three thin layers of different densities surrounding the cell. based on the micrograph, you can infer that this cell is and would appear after application of the gram stain procedure. gram-negative / pink gram-positive / purple gram-positive / pink gram-negative / purple

¿cómo demostraron los experimentos de griffith que un factor hereditario estaba involucrado en la transformación bacteriana?