PLEASE HELP DNA and RNA are nucleic acids and are composed of nucleotides. The structure of nucleic acids has an effect on the function.

Identify the type of chemical bond and describe the directionality of structure in DNA and RNA. Explain how a change in the subunits can affect their structure and function.

What evidence did mendel find that supported his law of independent assortment? a. dominant traits are expressed when there is a dominant allele. b. traits do not affect the inheritance of other traits. c. some traits have three or four different alleles. d. plants and animals can both reproduce sexually.

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.

Explain the difference between incomplete dominance and codominance