Across
- 1. the immediate descendants of a person or organism
- 4. observable characteristics produced by genes and environment
- 6. any event that changes genetic structure
- 8. a mature sexual reproductive cell
- 10. a distinguishing feature of your personal nature
- 13. the appearance of the chromosomal makeup of a somatic cell in an individual or species
- 14. a hybrid produced by crossing parents that are homozygous except for a single gene locus that has two alleles
- 16. an event in which one thing is replaced by another
- 17. having identical alleles at corresponding chromosomal loci
- 20. the ancestry or lineage of an individual
- 21. similar in position, structure, function, or characteristics
Down
- 2. a phosphoric ester of a nucleoside
- 3. a base found in DNA and derived from pyrimidine
- 5. part of DNA controlling physical characteristics and growth
- 7. a purine base found in DNA and RNA
- 9. the process by which a cell divides into two smaller cells
- 11. occurring among members of a family usually by heredity
- 12. an organism or cell having only one complete set of chromosomes
- 14. cell division in sexually reproducing organisms
- 15. meiosis in which there is a failure of paired homologous chromosomes to separate; results in an abnormal number of chromosomes in the daughter cells
- 18. the cell from the union of a haploid spermatozoon and ovum
- 19. having dissimilar alleles at corresponding chromosomal loci