Question

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.

Answer 1

I think its B

Answer 2

hmm.... Sickle cell disease is caused by a genetic abnormality in the gene for hemoglobin, which results in the production of sickle hemoglobin but be careful, and why b ?

Answer 3

For me its more of a guess. i'm not great when it comes to biology

Answer 4

it's C change in two protiens valine for glutamic acid :)