Across
- 3. A segment of DNA that codes for a specific trait
- 4. The process of sperm and egg joining to form a zygote
- 8. The transfer of pollen from one flower to another - "plant fertilization"
- 10. Having two different alleles for a gene
- 12. A cross that examines one pair of contrasting traits
- 13. The physical traits of an organism
Down
- 1. An allele that is always expressed when present
- 2. A different form of a gene
- 5. An allele that is masked when a dominant allele is present
- 6. Having two identical alleles for a gene
- 7. Special reproductive cells like sperm or eggs
- 9. An organism with two different alleles for a trait
- 11. The genetic makeup of an organism