In regards to chromosome aneuploidies in humans: A. They are rare at the time of conception. B. They are seen more often as pregnancy progresses. C. If present at conception, they most often end in a...

In regards to chromosome aneuploidies in humans:

A. They are rare at the time of conception. B. They are seen more often as pregnancy progresses. C. If present at conception, they most often end in a miscarriage. D. All whole chromosome trisomies are incompatible with postnatal life. E. All whole chromosome monosomies are incompatible with postnatal life.