CK-12 Foundation
Ck 12: Life Science: Chromosomal Disorders
[Free Registration/Login may be required to access all resource tools.] Some children are born with genetic defects that are not carried by a single gene. Instead, an error in a larger part of the chromosome or even in an entire...
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Science.ca: Uchida Chromosome Mapping Game
This game has students matching pairs of chromosomes to determine if there are any extras, indicating Down Syndrome.