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Law of Independent Assortment
Genes for different traits segregate independently during gamete formation
Principle of Segregation
During gamete formation, alleles for the same trait are separated from one another. Thus gametes, only carry one copy of each gene so each parent only passes one copy of each gene to their offspring.
Appears in every generation
Approx. equal # of males and females affected
Ex. Huntington's Disease
Appears to "skip" generations
More males are affected than females
Females can be carriers
Non-disjunction of chromosomes during meiosis
Chromosomal abnormalities during crossing-over in meiosis
Mutations in DNA
Name three ways disorders arise.
Deletions, inversions, translocations, duplications
Name 4 other errors that can occur in chromosomes?
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