Genetics Crossword

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

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"