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ACROSS
3. structural rearrangement of a chromosome in which part of the DNA becomes oriented in the reverse direction.
5. repeated section of a chromosome.
6. structural rearrangement of a chromosome in which a broken piece has been reattached in the wrong location.
7. condition of having too many or too few copies of a particular chromosome.

DOWN
1. condition of having three or more of each type of chromosome characteristic of the species.
2. chart of family connections that shows the appearance of a trait through generations.
4. failure of chromosomes to separate properly during nuclear division.