Across
- 1. The way an organism looks
- 5. The genetic makeup of an organism
- 6. The study of traits
- 7. Long thread like structures in the nucleus
- 9. Refers to having two different alleles
- 10. square A tool used by scientists
Down
- 2. Refers to having two identical alleles
- 3. A segment of DNA that carries instructions
- 4. Various forms of the same gene
- 8. A change in an organism's that DNA
- 9. The passing down of traits