MICROANATOMY

Detailed explanation-1: -Conception happens when sperm swims up through the vagina and fertilizes an egg in the fallopian tube. It happens in the hours or days after you have unprotected sex. After conception, the fertilized egg implants into the uterus and a pregnancy begins.

Detailed explanation-2: -In women, only one of the four sex cells becomes an egg cell that can be fertilized. During meiosis, it receives most of the cell body of the parent cell. The three smaller cells – referred to as polar bodies – break down and disappear. If a sperm cell fertilizes an egg cell, the nuclei of the two cells combine.

Detailed explanation-3: -Fertilization means the sperm has attached to and entered the egg.