Which of the following describes how damaged DNA can lead to a mutation?
O
A. An error occurs when the damaged DNA is repaired.
O
B. The nucleotide sequence of the damaged DNA is restored
perfectly
O
C. The segment of DNA that is damaged is transcribed into RNA.
O
D. The damaged DNA stops all protein synthesis by the cell.

Once an egg cell is fertilized by sperm, the cell then, as the embryo develops, it receives nourishment and eliminates wastes by transferring substances from its blood to its mother's blood. a. becomes a fetus immediately and exits the womb b. begins to divide and implants itself in the wall of the uterus c. remains in the uterus without dividing for several months d. travels back to the ovaries until the fetus is developed