Genetics

5. Male and female reproductive cells join
6. The likelihood that a particular event will occur
9. Organisms that have two identical alleles for a particular gene
11. A gene with more than two alleles
12. Different forms of a gene
13. A specific characteristic
15. Each of the four chromosomes from the male parent has a corresponding chromosome from the female parent
16. Fertilized egg
17. Genetic makeup
18. Uses mathematical probability to help predict the genotype and phenotype combinations in genetic crosses
20. Study of heredity
22. The process after tetrads are formed
23. A process in which the number of chromosomes per cell is cut in half through the separation of homologous chromosomes

1. The Principle of ___________ states that genes for different traits can segregate independently during the formation of gametes
2. States that some alleles are dominant and others are recessive
3. Cells that contain only a single set of chromosomes
4. Physical traits
6. Traits controlled by two or more genes
7. One allele is not completely dominant over another
8. A cell that contains both sets of homologous chromosomes
10. Organisms that have two different alleles for the same gene
14. A structure that contains four chromatids
17. Factors that are passed from parent to offspring
19. Offspring of crosses between parents with different traits
21. The phenotypes produced by both alleles are clearly expressed