‘Bt cotton’ is a genetically modified strain of cotton plant. Each plant cell includes a gene from a soil bacterium, which causes the plant to make a chemical that kills caterpillars when they feed on the plant. What has been transferred from a soil bacterium to Bt cotton plants?

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.

In which case would a scientist choose to use a dissecting microscope rather than a compound microscope

Across of blue x blue (both heterozygous) would result in