the zygote “represents the beginning of a human being.” From the moment of fertilization, the new human has unique DNA that serves as the cellular blueprint for the duration of his or her ...

Because the zygote originated from the same egg and the ... some genetic variations due to mutations – that is, changes in DNA. That study found a relatively tiny number of mutations between ...

Your baby doesn’t magically — poof! — turn into an embryo immediately after conception. There’s a whole process that you probably learned about (and possibly forgot) in your high school ...

This produces a new cell called a zygote, which will mature into an embryo. The number of cells increase by mitosis, and as the embryo develops, the cells begin to differentiate (or specialise).