Across
- 2. process in which homologous chromosomes exchange portions of their chromatids during meiosis
- 4. An allele that is masked when a dominant allele is present
- 7. an organism that is genetically identical to the organism from which it was produced
- 10. An organism that has two different alleles for a trait
- 11. a chemical or physical agent that interacts with DNA and causes a mutation
- 14. Different forms of a gene
- 18. independent segregation of genes during the formation of gametes
- 20. a characteristic that an organism can pass on to its offspring through its genes.
- 21. An organism that has two identical alleles for a trait
- 22. cell division that produces reproductive cells in sexually reproducing organism
Down
- 1. likelihood that a particular event will occur
- 3. genetic makeup of an organism
- 5. a cross between two individuals, concentrating on only one definable trait
- 6. describes a trait that covers over, or dominates another form of that trait.
- 8. specialized cell involved in sexual reproduction
- 9. Cross-fertilization of two different varieties of an organism or two different species; hybridization
- 12. DNA DNA produced by combining DNA from different sources
- 13. engineering Process of making changes in the DNA code of living organisms
- 15. An organism's physical appearance, or visible traits
- 16. a segment of DNA on a chromosome that codes for a specific trait
- 17. cross between an organism with an unknown genotype and an organism with a recessive phenotype
- 19. the variety of different types of genes in a species or population