Genetics Vocabulary

2. a genotype in which the two alleles of a gene are the same
3. a model that is used to show the probability of all possible genotypes and phenotypes of offspring
6. something that affects the characteristics of an organism
8. traits that are passed from parent to offspring
9. the measure of likelihood that a trait will be expressed in an organism
11. scientist known as the father of genetics
13. section of DNA on a chromosome that has genetic information for one trait
14. passing of traits from parents to offspring
16. study of how traits are passed from parents to offspring
18. threadlike structures made of protein and a single molecule of DNA that carry an organism's genetic information
19. the genetic material of an organism (deoxyribonucleic acid)
20. permanent change in the sequence of DNA in a gene or a chromosome
21. a genotype in which the two alleles of a gene are different
22. how a trait appears or are expressed

1. genetic factor that blocks another genetic factor
4. a different form of a gene
5. product of reproductive cells coming together to form a new organism
7. traits that develop as a result of an organism's environment
10. A genetic factor that is blocked by the presence of a dominant factor
12. the alleles of all the genes on an organism's chromosomes; controls the phenotype
15. process by which organisms replicate themselves
17. cells that carry DNA