Across
- 2. An individual who has one recessive allele but doesn't show the trait
- 5. When a chromosome segment is copied
- 6. An allele that is masked by a dominant allele
- 10. Matching pairs of chromosomes
- 13. Different versions of the same gene
- 14. An allele that masks the expression of another allele
- 16. Having two different alleles for a trait
- 18. A cross involving only one trait
- 19. When chromosomes fail to separate properly during meiosis
- 20. A diagram used to predict offspring genotypes
Down
- 1. A cross involving two different traits
- 3. A change in DNA sequence
- 4. When one gene affects the expression of another gene
- 7. The physical appearance of an organism
- 8. Having two identical alleles for a trait
- 9. A family tree showing inheritance patterns
- 11. Something that causes mutations
- 12. Basic units of heredity
- 15. When a chromosome segment moves to a different chromosome
- 17. The genetic makeup of an organism