"Biology chapter 8": HTML5 Crossword

Across

2. Chromosomes that determine the sex of an individual (3,11)
3. If an organism has a certain characteristic that is always passed on to its offspring, we say that this organism bred true with respect to that characteristic (4,8)
7. A cross between two individuals, concentrating on only one definable trait. (10,5)
9. A genotype with two different alleles (12,8)
10. An allele that will not determine the phenotype unless the genotype is homozyegous in that allele (9,6)
11. A radical chemical change in one or more alleles (8)
12. A cross between two individuals, concentrating on two definable traits (8,5)
15. A situation in which abnormal cellular events in meiosis lead to either none of a particular chromosome in the gamete or more than one chromosome in the gamete (6,2,10,6)
18. A person who is heterozygous in a recessive genetic disorder (7,7,7)
19. An allele that will determine phenotype if just one is present in the genotype (8,6)

Down

1. A genotype in which both alleles are identical (11,8)
2. Inheritance of a genetic trait located on the sex chromosomes (3,6,11)
4. Chromosomes that do not determine the sex of an individual (9)
5. The observable expression of an organism's genes (9)
6. A situation in which a chromosome loses or gains genes during meiosis (6,2,10,9)
8. A diagram that follows a particular Phenotype through several generations (8)
13. Inheritance of a genetic trait not on a sex chromosome (9,11)
14. Two-letter set that represents the alleles an organism possesses for a certain trait (8)
16. A protein that, when introduced in the blood, triggers the production of an antibody (7)
17. One of a pair of genes that occupies the same position on homologous chromosomes (6)