Review

2. Organisms with three or more complete sets of chromosomes.
5. In incomplete ___, neither allele completely masks the other.
8. Huntington's disease is an example of a ___ genetic disorder.
11. A genetic family tree used to track traits is called a ___.
12. Mendel is called the father of ___.
15. Mendel's principle that alleles separate during gamete formation is the law of ___.

1. Genes close together on a chromosome are usually said to be ___.
3. Breeding closely related individuals to maintain pure traits.
4. A chart showing the order of genes on a chromosome is a chromosome ___.
6. Traits influenced by many genes are called ___ traits.
7. Crossing parents with different forms of a trait to combine their advantage is called ___.
9. A cross between an individual with an unknown genotype and a homozygous recessive is called a ___ cross.
10. In codominance, both alleles are ___ in the heterozygote.
13. A shaded square in a pedigree represents a male who ___ the trait.
14. The physical expression of a genotype.