Answer:
Step 1: ovulation
A secondary oocyte is released from the ovary and swept into the oviduct
Step 2: fertilization
A single sperm penetrates the secondary oocyte. Eventually, the sperm and egg nuclei will fuse, resulting in a fertilized egg, or zygote.
Step 3: cleavage
The zygote soon undergoes rapid mitotic cell divisions as it moves along the oviduct toward the uterus, becoming a pre-embryo that consists of two cells, then four cells, then eight cells, and so on.
Step 4: morula
By day 4, successive divisions produce a morula, a solid ball of cells that enters the uterus
Strep 5:blastocyst
By day 6, the pre-embryo becomes a blastocyst, a hallow ball of cells with a fluid-filled cavity. The blastocyst has freed itself from the zona pellucida and can increase in size.
Step 6: implantation
The blastocyst attaches to the uterine lining (endometrium) and begins to digest its way inward. The cells of the inner cells mass begin to form primary germ layers.
Zygote
A fertilized ovum contains genetic material from the mother and father (23 chromosomes each)
Explanation: please brainliest
