A) Homozygous
B) Heterozygous
C) Hemizygous
D) Monogamous
E) Locus

A) It situates at one or more sites on homologous chromosomes.
B) It has a unique genotype and phenotype.
C) It consists of the complete observable characteristics of an organism or group.
D) It determines each trait.
E) It is a method for calculating the number of different gametes.

A) Klinefelter syndrome
B) Turner syndrome
C) Down syndrome
D) Cushing's syndrome
E) Cystic fibrosis