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Sickle cell disease is caused by a:



A. change in one allele.

B. change in the size of a chromosome.

C. change in two proteins.

D. change in the number of chromosomes in a cell.

Respuesta :

Thegoodbrother
sickle cell disease trait is passed on when one parent has a change in the a gene. when no the parents have a Chan g rd in the a gene then the chances of getting sickle cell disease is greater