Across
- 3. a chart which shows different phenotypes in a family tree
- 5. all the genes in an organism
- 9. a specific characteristic in an individual
- 12. the reproductive cell of an organism
- 13. two of these must be present to get a certain feature
- 14. a DNA molecule with the genetic material of an organism
- 16. a single cell released from the ovaries which can develop into a new organism when fertilized
- 17. when 2 alleles are the same
- 18. only one of these must be present to get a feature
Down
- 1. determines a feature or trait
- 2. different forms of the same gene
- 4. the code of the alleles
- 6. contains an allele but not the feature
- 7. organisms whose genetic code is identical
- 8. when 2 alleles are different
- 10. the male gamete
- 11. what the organism looks like, this depends on the genotype
- 15. a change in the DNA sequence of an organism