Tionne "T-Boz" Watkins (of the group TLC)
It has to do with your genitic make up. You don't have sickle cell anemia because you only have 1 of the traits on your beta hemoglobin gene. People with sickle cell anemia have two.Most of the time peolple with sickle cell trait display much milder symptoms. It is more prevolent in African Americans and woman should be monitored during pregnancy.
A child has to receive the gene from both parents to heve sickle cell anemia. if only one parent passes on the gene, then the child will have sickle cell trait, but no symptoms of sickle cell anemia.
sickle cell trait is inherited from one set of gene alleles from both parents. if you get two traits together it will cause sickle cell anemia which is a disease, sickle cell trait is not a disease. i dont know what autosomal means!! i dont know what codominance means!!
Sickle cell anemia was discovered in the 1870's and carried many names, but 1922 it was officially named sickle cell anemia.
Sickle-cell anemia is characterised by abnormal haemoglobin which are not the correct shape and cannot carry oxygen. It is a genetic disease - and a person must have two copies of the gene to have sickle-cell anemia. (Heterozygous individuals, with one copy, are known as having sickle-cell trait - and some of their haemoglobin may be misshapen).
The sickle cell trait is that you dont have the whole thing you have half of it which is called the trait
Sickle cell anemia is an autosomal recessive disease. Carriers have sickle cell trait, which confers resistance to malaria.
It is important to note that sickle-cell anemia comes in two forms. The homozygous sickle-cell anemia and the heterozygous sickle-cell trait. The difference between the two is that sickle-cell anemia has a high rate death rate at a young age (20~), and the sickle-cell trait is nearly asymptomatic.In regions such as North America, sickle-cell anemia would be selected against and would eventually leave the gene pool. The sickle-cell trait on the other hand, has little effect on the fitness of the organism, and as such will remain in the gene pool.In malaria endemic regions such as sub-Sahara Africa, sickle-cell anemia provides very high levels of immunity to malaria and the sickle-cell trait provides a slightly lesser level of immunity. Both forms of sickle-cell will increase the organisms fitness and as such, it will remain in the gene pool. Further on, the sickle-cell trait has greater fitness than sickle-cell anemia, hence, the sickle-cell trait will be selected as the fittest allele.If s is the sickle-cell allele and S is a normal allele;The relative fitness in malaria endemic regions;Ss > ss > SSSickle-cell trait > Sickle-cell anemia > NormalThe relative fitness in non-malaria endemic regions;SS > Ss > ssNormal > Sickle-cell trait > Sickle-cell anemia
sickle cell anemia. If you are only heterozygous for this disease it is simply called sickle trait.
codominant
C. Sickle-cell anemia
Sickle cell anemia can't be prevented through medicine because it is a genetic trait. The only way to totally prevent it is to make sure that neither parent carries the trait.
It has to do with your genitic make up. You don't have sickle cell anemia because you only have 1 of the traits on your beta hemoglobin gene. People with sickle cell anemia have two.Most of the time peolple with sickle cell trait display much milder symptoms. It is more prevolent in African Americans and woman should be monitored during pregnancy.
One gene controlled one trait within Mendel's study, but the sickle cell anemia effects more than one trait.
A child has to receive the gene from both parents to heve sickle cell anemia. if only one parent passes on the gene, then the child will have sickle cell trait, but no symptoms of sickle cell anemia.
If you have beta thalassemia trait and your partner has sickle cell trait there is a 25% chance of your child having sickle beta thalassemia.
Individual homozygous for the sickle cell anemia allele