Across
- 4. a fertilized egg (2N) that results from fertilization
- 6. The random lining up, crossing over and random separation of homologous chromosomes that creates natural variation during meiosis
- 8. A condition in which both alleles for a gene are fully expressed
- 10. alternative forms of a gene that code for a trait or a gene variant
- 12. 2 different alleles for trait
- 14. identical joined strands that join at the centromere and form a chromosome
Down
- 1. Gene or allele combination the organism contains
- 2. having a single set of unpaired chromosomes
- 3. DNA is exchanged between non sister chromatids; the chromosome segments break off, change places, and rejoin on the opposite chromosome
- 5. the constricted point at which the two chromatids forming the chromosome are joined together
- 7. containing two complete sets of chromosomes, one from each parent
- 9. Situation in which one allele is not completely dominant over another allele
- 11. 2 alleles for a trait that are the same
- 13. Way an organism looks, its "physical appearance"