deficit in language comprehension or production due to brain damage, usually on the left hemisphere (similar deficit not usually found with damage to the right hemisphere)
The only exception is sperm or eggs which are produced by a different type of cell division called ________. meiosis. fertilization. sperm and egg unite to form a single cell called the zygote which contains chromosomes from the sperm and egg. The zygote undergoes mitosis to begin the development of the embryo which eventually becomes a baby
As soon as the one lucky sperm cell succeeds in penetrating the egg, the egg immediately undergoes a chemical reaction that prevents other sperm cells from penetrating as well (to the victor belongs the spoils). Then the chromosomes carried by the sperm and egg come together, and the egg is officially fertilized. Within a matter of hours, the microscopic zygote divides, then divides again and again. About a week later, a ball of around 100 cells (called a blastocyst) reaches your uterus and settles down into the uterine lining.