1. allele - one of a number of different forms of a gene.
2. codominance - situation in which both alleles of a gene contribute to the phenotype of the organism.
3. crossing-over - process in which homologous chromosomes exchange portions of their chromatids during meiosis.
4. diploid - term used to refer to a cell that contains both sets of homologous chromosomes.
5. fertilization - process in sexual reproduction in which male and female reproductive cells join to form a new cell.
6. gamete - specialized cell involved in sexual reproduction.
7. gene - sequence of DNA that codes for a protein and thus determines a trait.
8. gene map - diagram showing the relative locations of each known gene on a particular chromosome.
9. genetics - scientific study of heredity.
10. genotype - genetic makeup of an organism.
11. haploid - term used to refer to a cell that contains only a single set of chromosomes and therefore only a single set of genes.
12. heterozygous - term used to refer to an organism that has two different alleles for the same trait.
13. homologous - term used to refer to chromosomes that each have a corresponding chromosome from the opposite-sex parent.
14. homozygous - term used to refer to an organism that has two identical alleles for a particular trait.
15. hybrid - offspring of crosses between parents with different traits.
16. incomplete dominance - situation in which one allele is not completely dominant over another.
17. independent assortment - independent segregation of genes during the formation of gametes.
18. meiosis - process by which the number of chromosomes per cell is cut in half through the separation of homologous chromosomes in a diploid cell.
19. multiple alleles - three of more alleles of the same gene.
20. phenotype - physical characteristics of an organism.
21. polygenic traits - trait controlled by two or more genes.
22. probability - likelihood that a particular event will occur.
23. Punnett square - diagram showing the gene combinations that might result from a genetic cross.
24. segregation - separation of alleles during gamete formation.
25. tetrad - structure containing 4 chromatids that forms during meiosis.
26. trait - specific characteristics that varies from one individual to another.
27. true-bleeding - term used to describe organisms that produce offspring identical to themselves if allowed to self-pollinate.
2. codominance - situation in which both alleles of a gene contribute to the phenotype of the organism.
3. crossing-over - process in which homologous chromosomes exchange portions of their chromatids during meiosis.
4. diploid - term used to refer to a cell that contains both sets of homologous chromosomes.
5. fertilization - process in sexual reproduction in which male and female reproductive cells join to form a new cell.
6. gamete - specialized cell involved in sexual reproduction.
7. gene - sequence of DNA that codes for a protein and thus determines a trait.
8. gene map - diagram showing the relative locations of each known gene on a particular chromosome.
9. genetics - scientific study of heredity.
10. genotype - genetic makeup of an organism.
11. haploid - term used to refer to a cell that contains only a single set of chromosomes and therefore only a single set of genes.
12. heterozygous - term used to refer to an organism that has two different alleles for the same trait.
13. homologous - term used to refer to chromosomes that each have a corresponding chromosome from the opposite-sex parent.
14. homozygous - term used to refer to an organism that has two identical alleles for a particular trait.
15. hybrid - offspring of crosses between parents with different traits.
16. incomplete dominance - situation in which one allele is not completely dominant over another.
17. independent assortment - independent segregation of genes during the formation of gametes.
18. meiosis - process by which the number of chromosomes per cell is cut in half through the separation of homologous chromosomes in a diploid cell.
19. multiple alleles - three of more alleles of the same gene.
20. phenotype - physical characteristics of an organism.
21. polygenic traits - trait controlled by two or more genes.
22. probability - likelihood that a particular event will occur.
23. Punnett square - diagram showing the gene combinations that might result from a genetic cross.
24. segregation - separation of alleles during gamete formation.
25. tetrad - structure containing 4 chromatids that forms during meiosis.
26. trait - specific characteristics that varies from one individual to another.
27. true-bleeding - term used to describe organisms that produce offspring identical to themselves if allowed to self-pollinate.