Genetics!

4. of dominance . states that some traits of an organism are observed and mask the recessive trait.
9. . the way an organism looks or behaves.
11. . changes in the nucleotide sequence of DNA.
14. . genetically determined characteristics.
15. the allele combination is different (Hh)
18. . alleles that are always expressed.
19. . both alleles in the heterozygous genotype are expressed.
20. . portion of DNA that codes for a specific trait.

1. alleles . more than two forms of the same gene.
2. dominance . neither allele is completely dominate.
3. . alleles that are only seen in a homozygous state.
5. of Segregation . states that every organism has two alleles of each gene and when gametes are produced, that alleles separate.
6. mutation . inserting or deleting one or more nucleotides.
7. Mutation . change in a single nucleotide.
8. . the allele combination is the same (HH, hh)
10. traits . 2 or more genes express a wide range of phenotypes.
12. of independent assortment . states that genes for different traits are inherited independently of each other.
13. . occurs when a gene sequence is repeated.
16. . different forms of a gene
17. . the allele combination.