Question

if a human egg recieves 2 copies of a chromosome and is fertilized, how many copies of the chromosme would there be in the resulting embryo

Answer 1

Since embryo forms after fertilization, the cells that are developing will still have 2 complete sets of chromosomes or 2 genomes, having a maximum number of 2 chromosomes of the same type.

For instance 2 chromosomes 21 for instance.