Acute pancreatitis signs and symptoms include: Upper abdominal pain; Abdominal pain that radiates to your back; Abdominal pain that feels worse after eating; Fever; Rapid pulse; Nausea; Vomiting; Tenderness when touching the abdomen; Chronic pancreatitis signs and symptoms include: Upper abdominal pain; Losing weight without trying; Oily, smelly stools (steatorrhea)
Rating Newest Oldest. Best Answer: Polygenic Inheritance: Human skin color is a good example of polygenic (multiple gene) inheritance. Assume that three dominant capital letter genes (A, B and C) control dark pigmentation because more melanin is produced.
It seems like the dark skin is the original phenotype and that Homo sapiens developed light skin in several different ways, but dark skin only once (38). In other words, it is more difficult to evolutionary develop dark skin than light skin.This idea is supported by the genetic system of skin colour.ntroduction There is a strong correlation between skin colour of humans and UV radiation intensity (1, 2), indicating that the variation in skin pigmentation with latitude is a result of adaptation to different UV environments via natural (1) and/or sexual (3, 4) selection.