Answer:
Inherited a resistance to malaria
Explanation:
Errol's father carries two recessive genes for sickle-cell anemia, and Errol's mother carries two normal dominant genes. Therefore, Errol has inherited a resistance to malaria from his parents.
Errol will have a heterozygous genotype (AS). Scientifically, individuals that a carriers of the sickle cell allele have been reported to be resistant to malaria causing protozoa called plasmodium unlike the homozygous dominant allele AA which is susceptible to malaria infection or the recessive allele SS which causes sickle cell disease.
Answer:
The Second Amendment refers to a citizen's right to keep and bear arms.
Salinity is involved in the density of the water. The higher saline concentration, the higher the density is. The higher the density is, the less light gets through. Less light means it's colder, and certain creatures don't live as well in colder environments.
T started when Francisco Madero called for an overthrow to Porfirio Diaz after a corrupt election. It lasted for more than a decade, killing nearly a million people--however, it also created the modern Mexican state, gave the country its modern constitution (in 1917) and eventually leading to the creation of its ruling party, the PRI. Basically, the Revolution transformed Mexico from a country dominated by rural aristocrats to one dominated by an urban elite.
