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Q1. A population has a allele frequency of 0.7 for normal hemoglobin allele (HB positive) and 0.3 for the sickle cell anemia allele (HB negative) 50 individual are born with the following genotype, 24 HB positive, HB positive, 12 HB positive, HB negative, and 14 with HB negative HB negative, […]

Currently, three fossil skulls of Homo sapiens, dating to about 160,000 years BP, were discovered in eastern Africa. These skulls fill a gap between the 100,000-year-old H. sapiens skulls found in Africa and Israel and 500,000-year-old skulls of archaic H. sapiens found in Ethiopia. Supporters of the replacement model (out-of-Africa […]

Signs and symptoms of diabetesDiabetes is often referred to as a silent killer since it is quite easy to miss its symptoms. Individuals can experience different signs and symptoms and at times there could be no signs at all. The development of type 1 diabetes is normally sudden and dramatic. […]

Discussion John, a 32 year-old lawyer, had worried for several years about developing Huntington’s chorea, a neurological disorder that appears in a person’s 30s or 40s, bringing rapid uncontrollable twitching and contractions and progressive, irreversible dementia. It leads to death in about 10 years. John’s mother died from this disease. […]