Biology, 17.03.2020 21:29, jordanrose98
In those parts of equatorial Africa where the malaria parasite is most common, the sickle-cell allele constitutes 20% of the β hemoglobin alleles in the human gene pool.
Considering the overall human population of the U. S. mainland at the time when the slave trade brought large numbers of people from equatorial Africa, what was primarily acting to change the frequency of the sickle-cell allele in the overall U. S. population?
Answers: 1
Biology, 22.06.2019 10:00, tuetheturtle
The double bond between a carbon atom and two oxygen atoms (a molecule of carbon dioxide) has two characteristics. what are they? a. an ionic bond is formed between the oxygen and carbon atoms. b. four valence electrons are shared. c. two valence electrons are shared. d. valence electrons are shared between oxygen atoms.
Answers: 1
Biology, 22.06.2019 12:00, yesseniaroman21
Define the apical impulse and describe its normal location, size, and duration. which abnormal conditions may affect the location of the apical impulse? explain the mechanism producing normal first and second heart sounds. describe the effect of respiration on the heart sounds. describe the characteristics of the first heart sound and its intensity at the apex of the heart and at the base. describe the characteristics of the second heart sound and its intensity at the apex of the heart and at the base.
Answers: 1
In those parts of equatorial Africa where the malaria parasite is most common, the sickle-cell allel...
Mathematics, 18.09.2021 04:20
Mathematics, 18.09.2021 04:20
Mathematics, 18.09.2021 04:20
Mathematics, 18.09.2021 04:20