Genetics Words

4. a molecule containing a nitrogen base, a sugar, and a phosphate that forms the basic structural unit of DNA.
6. describes a trait that covers up, or dominates, another form of the trait
8. Two strands twisted around each other, like a winding staircase.
11. Passing on characteristics from parents to child
15. Having two unlike genes for the same trait.
18. chromosomes that contains alleles for different types of genes.
19. inherited characteristic that distinguishes one organism from the other.
20. physical expression of an organisms genes
21. A transfer of a chromosomal segment to a new position, especially on a nonhomologous chromosome.
23. A type of gene that is hidden by a dominant gene.

1. Change in genes or chromosomes that causes a new trait to be inherited.
2. an organism with one dominant and one recessive gene for a trait.
3. process of DNA in which it copies itself
5. One of a number of different forms of the same gene for a specific trait.
6. deoxyribonucleic acid; heredity material that controls the activities of the cell and has the information to make new cells and new proteins
7. The gene combination for a given trait in an organism.
9. condition in which neither of the two genes in a gene pair masks the other; produces a phenotype that is an intermediate between the 2 homozygous parents; mixture of the 2 different traits
10. cell part with information that determines what traits a living thing will have
12. small organelles that make proteins.
13. Protein synthesis process where enzymes make a RNA strand from DNA.
14. Both alleles for a characteristic are the same
16. ribonucleic acid which carries codes for making proteins from the nucleus to the ribosomes.
17. A condition in which both alleles of a gene pair in a heterozygote are fully expressed, with neither one being dominant or recessive to the other.
22. A short segment of DNA that gives instructions of development of traits of an organism