Genetics Test Review

2. a cross of two different characteristics which will create 16 different combinations
4. the expression of an organism’s genes (what it looks like!)
5. any of the alternative forms of a gene that might occur
6. the allele that is hidden whenever the dominant allele is present
10. when both of the alleles in a heterozygous individual contribute to the phenotype
11. chart used to trace the phenotypes and genotypes in a family to determine whether people carry diseases or traits.
12. the study of heredity and the variation of inherited traits
16. traits that are passed down genetically in the DNA from parents to offspring
17. traits that are learned or obtained during an organism's life
18. a specific characteristic that an organism can pass to its offspring through its gees
19. Dominant Alleles are expressed with these types of letters

1. an organism when both alleles are the same
3. when each allele in a heterozygous individual influences the phenotype it results in a blend
7. the genetic makeup or combination of alleles that were inherited from parents
8. a graphic used to predict the possible genotypes of offspring of 2 parents
9. the number of squares in a dihybrid cross
13. the allele whose trait always show up in the organism when the allele is present
14. the Austrian monk that is often called the father of genetics
15. when there is both a dominant and recessive allele