Aneuploidy and Copy Number Variation in Early Human Development

Early human in vitro fertilized embryos frequently accumulate whole chromosome aneuploidies and segmental imbalances. This embryonic chromosomal instability does not necessarily undermine normal human development, but it may lead to loss of conception, genetic disease, and genetic variation development. In this review we provide an overview of how this instability of chromosomes arises and evolves during early human embryogenesis.