Answers. Best Answer: take the two laces, cross them, put one lace under the cross, pull. take laces again make laces into loop (make an O shape) cross loops put 1 loop under cross, pull, being careful to pull on sides connected to 1st knot, so as not to undo loops. you're done. Source(s):
Beta thalassemia genes are more widespread -- found in Africa, the Middle East, India, Southeast Asia, and around the Mediterranean. Someone with only one of the beta genes will have beta thalassemia trait, a mild anemia in which the red cells are smaller than normal.
Similar to other common globin gene disorders (i.e., beta-thalassemia and sickle cell anemia), alpha-thalassemia is prevalent in tropical and subtropical world regions, where malaria was and still is epidemic, and it is thought that carriers of hemoglobinopathies are relatively protected in a malarial environment.lpha-thalassemia is caused most frequently by deletions involving one or both alpha globin genes. The most common deletions remove a single alpha globin gene, resulting in the mild alpha-thalassemia phenotype (- alpha/alpha alpha).