Joshua, 2, has been diagnosed with a blood disorder that limits the body’s oxygen supply and can cause joint swelling and heart and kidney failure. this genetic disorder can be treated through penicillin, pain medication, antibiotics, and blood transfusions, and his doctor has indicated that a study named baby hug may offer a better drug in the future.

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.

Indicate whether the following statements about the biases in the fossil record are true or false. a) inland species are more likely to be preserved than marine species b) organisms with hard body parts are more likely to be preserved than are those composed soft tissues. c) species that existed over a larger area are more likely to be preserved than species existing over a smaller area. d) organisms that lived very long ago are more likely to be found as fossils than organisms that lived relatively recently e) the fossils of larger organisms are more likely to be found than the fossils of smaller organisms

If the frequency of the p allele is .63 in the population then what is the frequency of the q allele?