We bet you've heard about DNA, the molecule that stores our genetic information. Do you typically associate DNA with keto-enol tautomerization? You should! DNA consists of a sugar-phosphate backbone and four nucleotide bases: adenine (A), guanine (G). thymine (T) and cytosine (C). The amides in T and G can exist in either of two tautomeric forms. Which two structures represent keto-like tautomers? Guanine Thymine HN H, N ON HNa. A&C b. A&D c. .B &c

The gene that causes sickle-cell disease is present in a higher percentage of residents of sub-saharan africa than among those of african descent living in the united states. even though this gene causes sickle-cell disease, it also provides some protection from malaria, a serious disease that is widespread in sub-saharan africa but absent in the united states. discuss an evolutionary process that could account for the different percentages of the sickle-cell gene among residents of the two regions.

Adoença vitiligo afeta qual doença do corpo?

1. fold your hands together so your thumbs cross over ,and look at your thumbs. which thumb feels most "comfortable" on top is actually controlled by a gene. the left thumb folding over the right thumb is a domi