I probably just have a really bad grasp on how genetics work, but if human eggs already have an X chromosome plus all the other necessary genes needed to combine with another haploid cell, why can’t 2 eggs just combine with each other to make an XX zygote?
In: Biology
The simple answer is that there’s nothing about the DNA that prevents you from combining the chromosomes to make a zygote, in theory.
In reality, there’s a lot of complex chemistry and chain reactions that happens when a sperm fertilizes an egg, and that chemistry is what actually matters in turning the egg into a zygote. We don’t entirely understand that chemistry enough to replicate it in a lab without fertilizing an egg.
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