Across
- 4. Monk who did first major experiments investigating genetics.
- 6. thread-like structure found in the nucleus and contain DNA
- 8. a unit of heredity that occupies a specific location on a chromosome and codes for a particular product
- 9. the letters used to represent the genes an organism has (Ex. TT, Tt, tt)
- 11. genes code to express certain features (Ex. eye, hair color)
- 12. describes actual characteristics that can be observed in an organism
Down
- 1. allele that is only expressed where there are two copies of it present
- 2. diagram of family relationships that includes two or more generations
- 3. fertilized cell (sperm and egg together)
- 5. allele that is expressed in phenotype even if only one copy is present in the genotype
- 7. passing of genes from parent to offspring
- 8. cells that contain half the usual number of chromosomes
- 10. twins that come from one egg fertilized by one sperm, but divide completely
- 13. tool used to predict how the parents' alleles might combine in offspring