Question

How does a DNA mutation cause a disease like sickle-cell anemia? (1 point)

a) The DNA cannot be used to produce proteins.

b) The DNA is not transcribed correctly.

c) The DNA does not replicate properly.

d) The DNA codes for proteins that do not function properly.

Answer 1

Sickle-cell anemia is caused by a DNA mutation that changes the hemoglobin protein, resulting in the abnormal shape of red blood cells.

Step-by-step explanation:

Sickle-cell anemia is caused by a DNA mutation that leads to a change in the hemoglobin protein. This causes the red blood cells to take on a sickle or crescent shape. The mutation replaces the amino acid glutamic acid with valine, which causes the hemoglobin protein to not function properly.