Genetics

2. Square A chart that shows all the possible combinations of alleles that can result from a genetic cross
4. Parental generation, the first two purebred individuals that mate in a genetic cross
5. one of a number of different forms of a single gene
9. An organism that has two identical alleles for a trait
10. An organism's genetic makeup, or allele combinations
12. Law that states that a recessive allele will always be masked by a dominant allele.
14. Passing of traits from parents to offspring
15. Augustinian monk and botanist whose experiments in breeding garden peas led to his eventual recognition as founder of the science of genetics (1822-1884)
16. An allele that can be hidden whenever the dominant allele is present
19. the first generation of offspring obtained from an experimental cross of two organisms
20. Cross A genetic cross in which only one trait is tracked

1. An organism's physical appearance, or visible traits.
3. An organism that has two different alleles for a trait
6. Assortment Mendel's second law, stating that allele pairs are not linked and separate independently from one another during gamete formatio
7. An allele whose trait always shows up in the organism when the allele is present.
8. An organism that always produces offspring with the same form of a trait as the parent. Often also called a "true-bred"
11. Characteristics that are inherited
13. the second generation of offspring, obtained from an experimental cross of two organisms; the offspring of the F1 generation
17. of Segregation Mendelian law stating that two alleles for each trait separate during meiosis
18. The field of biology that studies heredity
21. Offspring of crosses between parents with different traits
22. Cross A genetic cross in which the inheritance of two traits are tracked at the same time.