The relationship between human genetics and eugenics, and the relationship between human genetics an

Micro Lesson Series丨Junior High School Biology Genetic Diseases and Eugenics.

Eugenics belongs to one of the normal (primitive) genetic means of human heredity. It is the opposite of inferior birth, which is a conventional genetic method dedicated to the perfection of human beings, and it is also relatively simple.

It mainly refers to a disease caused by a mutation in a pair of alleles, caused by mutations in dominant and recessive genes, respectively. This type of disease involves multiple genes that play a role, and the severity and risk of the disease can be significantly different, and it shows familial clustering.

I can be sure that many people who are preparing to become parents have a certain understanding of the phrase "genetic disease and eugenics" and what it contains or some examples, because many real unfortunate cases are really shocking. Then I will only make a brief description of genetic diseases and eugenics here, mainly to attract your attention.

Genetic diseases are diseases that are caused by changes in genetic material or controlled by disease-causing genes. Genetic disorders are diseases that are determined wholly or partly by genetic factors, often congenital or acquired. Such as congenital stupidity, polydactyly (toe), congenital deaf-mute, hemophilia, etc., these genetic diseases are completely determined by genetic factors, and the onset of the disease occurs after a certain period of time, and it takes several years, more than ten years or even decades to appear before obvious symptoms can appear when there are disadvantages.

So, can genetic diseases be **? Previously, it was thought that genetic diseases were incurable. However, in recent years, with the development of modern medicine, medical geneticists have clarified the pathogenesis of some genetic diseases in the study of genetic diseases, thus providing a certain basis for the prevention and prevention of genetic diseases, and new first-class measures have made great contributions to eugenics.

The term "eugenics" was first coined by the British human geneticist Galton in 1883, and its original meaning was "healthy heredity". He advocated that the spread of undesirable genetic qualities and the birth of inferior individuals should be reduced through selective marriage, so as to achieve the goal of gradually improving and enhancing the genetic qualities of the population. In layman's terms, the "birth" of eugenics refers to birth, "excellent" is excellent or excellent, eugenics is to give birth to superiority, that is, the use of genetic principles and a series of measures to make the offspring healthy and intelligent.

At present, China's eugenics work mainly includes the following points: prohibiting marriage between close relatives, conducting genetic counseling, and advocating age-appropriate childbearing and prenatal diagnosis.

I conclude: or the old saying "know yourself and know the other side to win a hundred battles", now science and technology are more and more developed, the research of life science is also advancing day by day, as long as we know what is a genetic disease, we will be able to follow the vine to study how to prevent genetic diseases, in reality, many have become a reality, so that eugenics is more fully prepared. I hope the above knowledge can help you understand "genetic diseases and eugenics".

Heredity is a very normal phenomenon, and some are even like parents cloning out, every couple is thinking about how to let their children inherit their own advantages? In fact, these factors are considered difficult to control, and parents can only be psychologically prepared for which genes are the easiest to inherit, and they can be modified according to the day after tomorrow.

One. Vision problems. For example, myopia, color blindness and amblyopia are common hereditary conditions.

For example, Dr. Stuart Dankenay, a pediatric ophthalmologist in Baltimore, USA, said that both parents are myopic, and the chance of myopia in children is 25%-50%. The color blindness gene is carried only by mothers, and only boys have a 50% chance of developing the disease.

If your child has a headache, squints and tears when he or she reads a book, watches TV, or comes back from school, he or she should take him to the hospital for a check-up.

Two. Eczema. Eczema, like allergies, is a symptom of allergic reactions, and the chance of heritability is 50%.

It is often said, "We don't have eczema!" Howard Salar, M.D., Director of Clinical Genetics at Cincinnati Children's Hospital Medical Center, noted

Parents pass on allergy genes to their children, not specific allergic diseases, so eczema can also be genetic. "Of all allergic diseases, eczema is the only one that develops in infancy. If you notice that your child's cheeks, elbows and knees are itchy and red, you should seek medical attention in time.

In addition, a study by the Technical University of Munich in Germany found that children with separated or divorced parents were three times more likely to develop eczema.

Three. Migraine. If one parent has migraines, the child has a 50% chance of developing the disease, and if both parents have the disease, the chance of inheritance is even higher.

Migraine symptoms include tingling in the front or sides of the head, nausea, vomiting, and fear of light and sound, and migraines often occur around the age of 8.

Four. Irritable bowel syndrome. Studies suggest that people with irritable bowel syndrome have immediate family members who also have such symptoms.

Dan Liehao, a clinical assistant professor of pediatrics at the University of Maryland School of Medicine in the United States, noted that the typical symptoms are crampy abdominal pain or alternating constipation and diarrhea. If the doctor diagnoses such diseases, it is necessary to urge the child to change his or her life and eat more foods containing probiotics.

Five. Depressed mood. Certain psychological problems and emotional conditions have a lot to do with family inheritance.

If there is a family history of depression, mania and obsessive-compulsive disorder, it is important to pay attention to whether your child has irritability, anxiety, difficulty concentrating and anorexia, so that you can seek medical help as soon as possible.

The above points are symptoms of hereditary probability, so as parents, we must pay attention to the child's living situation in the process of children's development, so as to carry out it in time.