Science

3. A purebred organism is the offspring of many generations that have the same trait.
5. Physical appearance, or visible traits.
7. An organism that has two identical alleles for a trait.
8. During prophase, the threadlike chromatin in the nucleus condenses to form double-rod structures.
10. The final stage of the cell cycle.- completes the process of cell division.
12. Chart that shows all the possible combinations of alleles that can result from a genetic cross.
14. cycle The regular sequence of growth and division that cells undergo.
16. In the next part of interphase, the cell makes an exact copy of the DNA in its nucleus in a process.
17. Hidden whenever the dominant allele is present.
19. A hybrid organism has two different alleles for a trait.
20. A number that describes how likely it is that an event will occur.
21. The factors that control a trait.
22. The scientific study of heredity.
23. The different forms of a gene.

1. Genetic makeup, or allele combinations.
2. The passing of physical characteristics from parents to offspring.
4. An organism that has two different alleles for a trait.
6. An inheritance pattern.
9. One whose trait always shows up in the organism when the allele is present.
11. Each different form of a characteristic, such as stem height or seed color.
13. A new organism begins to form when egg and sperm join in the process.
15. The first stage of the cell cycle
18. The stage during which the cell’s nucleus divides into two new nuclei.