Genetics

4. a trait that is expressed only when genotype is homozygous
5. Genetic code
6. the genetic makeup of an organism
7. The presence of two different alleles at a particular gene locus.
9. a change in the DNA sequence of an organism
11. the relationship between two versions of a gene
12. is the set of observable characteristics of an individual resulting from the interaction of its genotype with the environment.
14. one of two or more alternative forms of a gene that arise by mutation and are found at the same place on a chromosome.
15. the presence of two complete sets of chromosomes in an organism's cells, with each parent contributing a chromosome to each pair.

1. a type of inheritance in which two versions (alleles) of the same gene are expressed separately to yield different traits in an individual.
2. A type of genetic change that involves the absence of a segment of DNA
3. a disease caused in whole or in part by a change in the DNA sequence away from the normal sequence.
8. the scientific study of genes and heredity
10. The physical site or location of a specific gene on a chromosome.
13. the presence of a single set of chromosomes in an organism's cells