Genes are stretches of DNA that code for certain types of molecules. How an organism looks and functions is a result of the cumulative effect of all these molecules produced
from the DNA code?

What would be an example of hypothesis for goldfish respiration lab

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.

What field of science did harry hess study?