Explain the relationship between antigens and antibodies.Define blood type and blood group system.Nonetheless, it remains popular in East Asian countries, like astrology in many other countries. There is no scientific basis for the idea, and it is generally dismissed as pseudoscience by the scientific community. The idea was revived in the 1970s by a Japanese broadcaster who wrote popular books about it. The idea was originally introduced in the 1920s in a study commissioned by the Japanese government but later shown to have no scientific support. Reality: The belief that blood type is correlated with personality is widely held in Japan and other East Asian countries (the Japanese booth pictured below offers fortunes based on blood type). In selecting a spouse, both your own and your potential mate’s blood type should be taken into account to ensure the compatibility of your personality. For example, people with blood type A are patient and responsible but may also be stubborn and tense, whereas people with blood type B are energetic and creative but may also be irresponsible and unforgiving. Myth: ABO blood type is associated with certain personality traits. For example, people with diabetes but different blood types would follow different diets, and one or both of the diets might conflict with standard diabetes dietary recommendations and be dangerous. Because the blood type diet is based solely on blood type, it fails to account for other factors that might require dietary adjustments or restrictions. In one study, adults eating the diet designed for blood type A showed improved health, but this occurred in everyone regardless of their blood type. A major scientific review of the blood type diet could find no evidence to support it. Some medical doctors consider naturopathy a pseudoscience. Naturopathy is a method of treating disorders that involve the use of herbs, sunlight, fresh air, and other natural substances. Reality: This idea was proposed in 1996 in a New York Times bestseller Eat Right for Your Type, by Peter D’Adamo, a naturopath. Knowing your blood type allows you to choose the appropriate foods that will help you lose weight, increase your energy, and live a longer, healthier life. Myth: Your nutritional needs can be determined by your ABO blood type. If a transplanted organ has nonself antigens for ABO, it may be attacked by antibodies and rejected by the body. Blood type compatibility is important to consider for successful organ transplantation.
For example, people vary greatly in traits such as height and nose length because there are many genes that can affect the growth of a person.Antigens and Antibodies Figure \(\PageIndex\): You can always donate blood to someone who has the same blood type as yours, but you may or may not be able to donate to people who have other blood types, as indicated in this diagram.ĪBO blood type antigens are found not only on red blood cells but also on platelets, in other body fluids such as tears and urine, and on cells of other types of tissues. This refers to the times where one trait is affected by the expressions of many genes. For example, the gene in pea plants that expresses the round or wrinkled texture of seeds also influences the phenotypic expressions of starch metabolism and water absorption.
This occurs when one gene controls many traits in an animal. Often times these genes are shown in a dihybrid cross because they are so closely related and affect each other. Thus, there can be mice that have genes for black and agouti colored fur but if the pigment gene is missing then they all just appear white.
For example, in mice there are different genes for fur color, but there is also a gene that controls whether or not any pigment is produced at all. This is when the expression of a gene is controlled by the expression of another gene.
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