SCIENTISTS NOW GOD????

Scientist have finally created a living thing. They created and bred a MALE mice with no Y chromosomes

The Y chromosomes are what determines if a child will be a male or female. Only male has Y chromosomes. Females have double X (XX Chromosomes) while males have Y (XY chromosomes)
So, will this little mice never produce male children though its a male?
Are they trying to prove God wrong by saying males can exist without Y chromosomes