What is the risk of parents passing on defective genes to their children
What is the risk of parents passing on defective genes to their children
Genes are inherited through gametes,, humans There are 23 pairs of chromosomes. When forming gametes, the gene on one of each pair is taken from 46 pairs. Therefore, if one of the parents has a defective gene on one chromosome, the probability that the gamete will contain the gene is one-half, which means that the The probability of a gene being passed on to the next generation is also 1/2 (excluding sex chromosomes). However, this does not mean that the probability of disease in offspring is 1/2 because the dominant and recessive nature of the gene is unknown and gene mutations, gene recombination, etc. cannot be ruled out. If you consider the sex chromosomes, the series of problems will be more complicated. They are related to the gender of the offspring and the location of the defective gene segment of the parents. It is very complicated. Innate factors account for 70%, and the effect of acquired efforts is 100%. Thirty points. A girl's height is between her father's height minus thirteen centimeters and her mother's height. A boy's height is between his mother's height plus thirteen centimeters and his father's height. If it exceeds the height, it proves that nurture plays a considerable role. Generally, girls are affected by genetic factors a little bit more than boys, and have less room for development. But don't underestimate this 30%, it's still just over ten centimeters. Therefore, nutrition, exercise, and sleep the day after tomorrow are all very important, and they are the result of the combined effects of many factors. And long-term efforts are more effective. What are the chances that parents will pass AIDS to their children?
This is a technical question. Places with good medical conditions can reduce this to a very low level.
Because among the three main transmission routes of AIDS (blood, vagina, mother-to-child), blood transmission is the essence. That is to say, if there is no blood contact during sex, pregnancy and childbirth, there will be no infection. What is the chance of inheriting psoriasis from parents to their children
Generally, if both parents are psoriasis patients, the incidence rate of children is 50% to 66%; if only one parent is psoriasis The incidence rate in children of patients with scabies is about 16.4%. Psoriasis is not an infectious disease, but psoriasis patients often have a family history and have a genetic tendency. What genes do parents pass on to their children?
1. Absolute genetics Skin color: People have no choice. It always follows the natural law of parent-neutral color. For example, if the parent panel is dark, there will never be a child with perfect skin; if one parent is white and the other is dark, then on average during embryonic life most of the children will have a neutral skin color that is neither white nor black, but there are also more A bias towards one side occurs. Chin: It is a non-negotiable dominant inheritance, which makes you helpless. For example, even if either parent has a protruding chin, the children will always have the same chin, which is a bit uncanny. Double eyelids: It is also an absolute inheritance. Interestingly, most of the father's double eyelids will be passed down to his children. Some children are born with single eyelids and then grow up to have double eyelids like their father. In addition, big eyes, big earlobes, high nose bridge, and long eyelashes are all characteristics that can be most inherited from parents when inheriting facial features. If there is a certain defect in the genes of the father or mother, what is the chance that it will be passed on to the children?
Genes are inherited through gametes. There are 23 pairs of human chromosomes, and 46 are taken when gametes are formed. Therefore, if one parent has a defective gene on one chromosome, the probability that his or her gametes will contain the gene is one-half, which means that the probability that the gene will be passed on to the next generation is also one-half (regardless of sex). chromosomes), but it does not mean that the probability of offspring having the disease is one-half because the dominance and recessiveness of the gene is unknown and a series of problems such as gene mutation and gene recombination cannot be ruled out. If sex chromosomes are considered, the problem becomes more complicated with offspring. The relationship between gender and the location of the segment where the defective gene in the parents is located is complex. . . I hope the original poster can understand. .
What is the chance of passing psoriasis to a child?
Hello! Although psoriasis has a certain genetic probability, not all people will suffer from the disease, because many patients suffer from many diseases. It is possible to pass on the information of this disease to the next generation, but there must be acquired predisposing factors for it to manifest. Similarly, whether you suffer from psoriasis is determined by acquired conditions. Although genes cannot be modified at present, the only thing we can do is targeted rehabilitation treatment. In fact, the treatment effect of hereditary and acquired diseases is the same. The key lies in symptomatic treatment, so patients do not need to worry too much about inheritance. It causes unnecessary mental burden! Wish you a speedy recovery! What is the chance that women will pass on armpit odor to their children?
Armpit odor is hereditary. If the mother has body odor and the father does not, then the sons will basically have body odor, while the daughters will often only have body odor factors without showing body odor. If both parents have body odor, then even if the child is a girl, most of them will have body odor, especially boys. In some families, neither parent has body odor, but the son does. This is mostly because the mother has that factor.
Nowadays, technology is advanced and laser treatment can be performed the day after tomorrow. There is no need to worry too much. If one of the parents has baldness, what is the possibility of passing it on to the child?
This cannot be determined yet, because experts have not yet discovered the disease-causing gene locus, and cannot confirm genetic information and heritability. There is a detailed introduction on the encyclopedia, you can refer to it. ：baike.baidu./view/40211.htm What is the probability that a father with epilepsy will pass it on to his child?
Epilepsy is a chronic brain dysfunction caused by abnormal discharge of brain neurons. It is not an infectious disease, so it is not an infectious disease. It is contagious, but epilepsy is genetically predisposed. The offspring of epilepsy patients are 7.2 times more likely to have the disease than the offspring of normal people, which is the main cause of the disease in the next generation. Therefore, it is recommended that patients with epilepsy take medication when the disease is not effectively controlled. Do not have children during this period. Will parents' height be passed on to their children?
Genetic height is not the height of the parents. If the genetic height is short, then the child is less likely to grow taller in the future. Many parents think that genetic height is the height of the parents. In fact, this is not the case. To be precise, genetic height refers to the height of the family. If the parents are short, but the grandparents are tall, and the other siblings of the parents are also not short, it may be that the parents just encountered a disease or other accident during adolescence, resulting in the height being unable to increase, and the child's own genetic height He is not short, and it is entirely possible that he will surpass his parents in height in the future. If this happens, parents don't need to worry too much. As long as you live a normal life and ensure adequate exercise, sleep and nutrition, your child will grow smoothly according to the height trajectory of the original family. If the family is generally short in height, then it would be unreasonable to imagine that the child will grow up to be as tall as Yao Ming in the future. However, if reasonable exercise, adequate sleep and balanced nutrition are ensured, then children can maximize their genetic height, and many can still reach the standard height in the eyes of ordinary people. After all, height 30 is determined by nurture. Height 30 is affected by nurture. To improve acquired height, you need to do the following: 1. Exercise: It refers to reasonable exercise. High-intensity exercise like an athlete will increase the burden on the child's joints and inhibit the child's growth and development. Rope skipping has an obvious effect on improving children's height and is easy to operate. Parents can let their children jump once a day for ten minutes each time. If you persist, you can get good results. In addition, basketball, badminton, swimming, etc. are all very good sports. It is best for parents to help their children develop a good habit of loving sports. 2. Sleep: It is best to go to bed early. The most intense time for growth hormone secretion is from 10pm to 2am. Parents should not let their children go to bed after 10 o'clock. It is best for primary school students to go to bed before 9:30 and ensure eight hours of sleep every day. 3. Nutrition: It must be balanced. If a child is partial to or picky eaters, he or she will not grow taller.
Parents should supplement their children with enough protein, such as milk, meat, etc., and also pay attention to trace elements such as zinc, calcium, and iron. Lack of them will also cause growth retardation. If the optimal growth time is missed, it will be difficult to catch up in the future. 4. Disease: It is also a key factor that affects height. Parents should also pay attention to improving their children's immunity. If their children have long-term cough, allergic rhinitis and other chronic diseases, they need early treatment.