Pretty sure (d) bc they are young and not developed!
The disease that characterized by the absence of <span>a thymus, resulting in recurrent infections, heart defects, and characteristic facial features is: DiGeorge Syndrome
The deletion from Chromosome 22 led to the imperfect development of various body system which would lead to various health issues in the future.</span>
<span>Platelet is a term that is not used to refer to white blood cells. Platelets are the smallest of all blood cells, and make up a very small fraction of blood volume. The function of platelets is to prevent bleeding, whereas the function of white blood cells is to fight off infection and increase immunity to disease.</span>
Marathon race would not be considered as a team sport.
