"Mendelian genetics and inheritance": HTML5 Crossword

Across

3. Cross involving parents differing in only one trait (10,5)
5. Alleles segregate from one another during the formation of gametes (3,2,11)
6. The different forms of a gene (7)
7. Sex determination is based on these (0,3,11)
8. Intermediate phenotype in F1 (red and white=pink), parental phenotypes reappear in F2 (10,9)
9. A trait expressed preferentially over another trait (8,5)
11. The pair of chromosomes in a diploid individual that have the same overall genetic content (10,11)
13. A trait that is masked by the dominant trait (9,5)
14. Change in the sequence of DNA (8)
15. One gene masks the expression of a different gene for a different trait (9)
16. A single gene determines more than one phenotype for an organism (11)
18. Differing alleles for a trait in an individual, such as Yy (12)
19. heterozygous; usually referring to the offspring of two true-breeding individuals differing in the traits of interest (6)
20. Genes that are inherited together on the same chromosome (7)

Down

1. A locus on any chromosome but a sex chromosome (9)
2. Alleles of different genes are assorted independently of one another during the formation of gametes (3,2,11,10)
4. The physical appearance or expression of an organism's genotype (9)
10. Both alleles for a trait are the same in an individual (10)
12. Mutated genes that are capable of causing death (6,7)
17. The genetic make-up of an organism with respect to a trait (8)