Download Heredity Practice Problems

Heredity Practice Problems
For each genotype below, CIRCLE whether it is heterozygous or homozygous.
Then CIRCLE whether the dominant trait or the recessive trait will show up.
1. AA Heterozygous or Homozygous DOMINANT or recessive
2. bb Heterozygous or Homozygous DOMINANT or recessive
3. Cc Heterozygous or Homozygous DOMINANT or recessive
4. DD Heterozygous or Homozygous DOMINANT or recessive
5. Ee Heterozygous or Homozygous DOMINANT or recessive
6. ff Heterozygous or Homozygous DOMINANT or recessive
For each of the genotypes below determine what phenotypes would be possible.
Brown eyes are dominant to blue eyes
Round seeds are dominant to wrinkled seeds.
7. BB brown or blue
10. RR round or wrinkled
8. Bb brown or blue
11. Rr round or wrinkled
9. bb brown or blue
12. rr round or wrinkled
For each phenotype below, list the genotypes (2 letters/alleles).
Straight (H) hair is dominant to curly (h).
Pointed face (F) is dominant to round (f).
13. ____ straight
16. _____ pointed
14. ____ straight
17. _____ pointed
15. ____ curly
18. _____ round
Set up the Punnett squares for each of the crosses listed below. Round seeds are dominant to wrinkled seeds.
19. Rr (top) x Rr (side)
20. What percentage of the offspring will be round? _______________
21. What percentage of the offspring will be recessive? _______________
22. What percentage of the offspring will be homozygous? _______________
23. RR x rr
24. What percentage of the offspring will be dominate? _______________
25. What percentage of the offspring will be recessive? _______________
26. What percentage of the offspring will be heterozygous? _______________
27. Rr x rr
28. What percentage of the offspring will be round? _______________
29. What percentage of the offspring will be wrinkled? _______________
30. What percentage of the offspring will be heterozygous? _______________
31. RR x Rr
32. What percentage of the offspring will be round? _______________
33. What percentage of the offspring will be wrinkled? _______________
34. Define heredity
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35. Explain where genetic material is located in eukaryotic cells. (chromosome, nucleus, DNA, gene)
__________  ____________  _________________  ________________  Eukaryotic Cells