People who kill a fertilized egg consider as murders

The article title is " On abortion and defining a "person" which is mainly talk about when the life start and how do we consider people as a murder? In this article, it support to people who unsupport abortion and treat a fertilized egg as a real life. They have the argument that if people consider killing a fetus or embryo possesses as murders, because a fertilized egg has the same DNA, it needs to consider as the same situation as fetus and embryo possesses.