The uterus is prepared to receive a fertilized egg. If the egg is fertilized after ovulation, it is implanted in the uterus and embryonic
development begins. If it is not fertilized, it is shed along with the lining of
the uterus. This shedding process during the cycle is called

Explanation:

The female reproductive system provides several functions. The ovaries produce the egg cells, called the ova or oocytes. The oocytes are then transported to the fallopian tube where fertilization by a sperm may occur. The fertilized egg then moves to the uterus, where the uterine lining has thickened in response to the normal hormones of the reproductive cycle. Once in the uterus, the fertilized egg can implant into thickened uteri…

b brown mice / white sand dunes

answer:

sequence 1- deletion

                  2- duplication

                  3- insertion

                  4- substitute

                  5- inversion