In certain plants, tall is dominant to short trait. if a heterozygous plant is crossed with another heterozygous (tall) plant, what is the probability that the offspring will be short?

Which of the following is a possible reason for sleep? a) growth b)digestive c)speed d)intelligence

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.

The bacteria found in soil is usually harmful and measures are taken to remove any traces of microorganisms. true or false