Genetics

6. A gene that is found in one of two different forms in a chromosome
8. trait Result from variation within multiple genes and their interaction with behavioral and environmental factors
9. A substance added to something in small quantities to improve or preserve it
10. Two of the same form of a particular gene for something
11. A chromosome or DNA variant that is observed in natural populations
13. The molecule inside the cells that contains the genetic information
14. An organism possessing one copy ( heterozygous) of a recessive allele
15. The expressed characteristic or trait of an organism
16. over The exchange of genetic material between members of a pair of homologous chromosomes
17. An allele that is almost always expressed, even if only one copy is present
19. Physical structure that stores the genetic information

1. Changes in the DNA that codes for a gene
2. The genetic constitution of an individual organism
3. An organisms complete DNA sequence found in one set of its chromosomes
4. The rearrangement of genetic material
5. The cell division process that eggs and sperm go through which halves the chromosome number from 46 to 23
7. pair A pair of complementary bases in a double-stranded nucleic acid molecule
10. A disease or quality passed on from a parent to a child
12. Membrane bound organelles, or specialized parts of cells
18. Controlled by genes that are expressed in offspring only when inherited from both parents