I have to make a punnet square with a 50/50 chance of white or black wool white wool is WW and black wool is WW someone please help

What are chlorofluorocarbons made of

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.

Based on the data in your tables, did the light-colored moths have a higher or lower survival rate after the industrial revolution?