genetics 3

2. Having two identical alleles for a trait:
5. The proportion of individuals with a particular genotype that actually express the associated phenotype:
6. DOMINANCE A pattern of inheritance where heterozygote displays an intermediate phenotype between both homozygotes:
8. An allele whose expression is masked by another allele:
10. An allele that masks the expression of another allele:
15. A pattern of inheritance in which both alleles contribute to the phenotype of the heterozygote:
16. A pattern of inheritance where one gene affects multiple traits:
17. CROSS A mating between an individual of unknown genotype and a homozygous recessive individual:
18. GENES Geneslocated on the same chromosome that tend to be inherited together:
19. OVER The exchange of genetic material between homologous chromosomes during meiosis:

1. The failure of homologous chromosomes or sister chromatids to separate properly during cell division:
3. A chart that traces the inheritance of a trait in a family:
4. ASSORTMENT Mendel's second law stating alleles of different genes assort independently of one another during gamete formation:
5. The physical appearance of an organism for a trait
7. The varying degree to which a genotype is expressed in an individual:
9. Having two different alleles for a trait:
11. SQUARE A diagram used to predict the outcome of a genetic cross:
12. The genetic makeup of an organism:
13. CROSS A cross involving one trait:
14. Alternative forms of a gene: