1. allele

2. Alternate form of a gene gene variant

3. autosome

4. Chromosome that does NOT determine sex #1-22 in humans

5. chromosome

6. Structure made of DNA and special proteins; carries genes

7. DNA

8. Deoxyribonucleic acid; sequences in DNA are codes for making proteins

9. Dominant

10. Allele that exerts effect with just one copy; “overpowers” recessive gene

11. gene

12. Sequence of DNA that has a known function; encodes for a protein or turns another gene on/off

13. Gene pool

14. All of the genes in a population

15. genome

16. Complete set of genetic instructions ; all of the A, T, C, and G’s in the DNA of an organism

17. genotype

18. Allele combination ex. Tt or tt

19. karyotype

20. Display of chromosomes in order of size

21. Mendelian trait

22. Determined by a single gene

23. Multifactorial trait

24. Determined by one or more genes and the environment

25. Mutation

26. Change in a gene; could affect health, appearance or biochemistry

27. Pedigree

28. Diagram used to follow inheritance of a trait in a family

29. Phenotype

30. Observable expression of allele combination ex. Tall or short

31. polymorphism

32. A place in the genome that varies in 1% or more of the population

33. recessive

34. An allele that exerts effect only when present in two copies

35. RNA

36. Ribonucleic acid ; many jobs including helping cells to synthesize proteins

37. Sex chromosome

38. Chromosome that carries genes that determine sex in humans XX or XY