Review for Heredity Unit
Name ___________________
Match the following vocabulary terms to the correct definition.
traits
heredity
genes
genetics
allele
dominant
recessive
hybrid
genotype
phenotype
co-dominant
1.
purebred
homozygous
heterozygous
A condition in which the two alleles of a gene are different.
______________________
2. An organism’s gene type, or allele combination is known as its
_______________________.
3. An allele that seems to disappear (or is covered up ) when a dominant allele is
present is called __________________________
4. The passing of traits from parent to offspring. ______________________
5. An organism’s physical appearance, or what it looks like is called its
______________________
6. A cross between two different alleled parents. ______________________
7. A condition in which the two alleles of a gene are the same.
______________________
8. An allele whose trait always shows up when it is present _____________________
9. Factors that control traits are called ______________________
10. A cross between two same alleled parents. ______________________
11. Different forms of a characteristic like blue eyes are _____________________
12. When more than one allele is dominant as in blood types. ___________________
13. The area of science that studies heredity is ______________________
Mrs. Franklin wanted to plant some flowers in her garden. She really liked purple
flowers so she bought some and planted them in her garden. The next year she had
purple and white flowers in her garden. She knew she only planted purple flowers so,
where did the white ones come from? She learned by teaching her science students
about heredity that sometimes a recessive gene could show up if both parents were
heterozygous for the trait. She wondered if these white flowers were showing the
homozygous recessive gene.
14. Using a punnett square, cross two heterozygous (Pp) parent plants.
15. Circle the homozygous recessive white flowers shown in the punnett square.
16. What percent of the time would you get ( Pp ) in the offspring? ___________
Remember the activity “Cross Pollinate” and give the phenotype for each of the flowers
listed below.
(hint: phenotype is what it physically looks like)
17. genotype (PP) = phenotype __________________
18. genotype (Pp) = phenotype __________________
19. genotype (pp) = phenotype __________________
Draw a line to match the genotype with the correct term.
20. ww
21. Ww
22. WW
heterozygous
homozygous dominant
homozygous recessive
Write the main idea about each of the 5 Advances in Genetics.
23. DNA fingerprinting
_________________________________________
_________________________________________
24. cloning
_________________________________________
_________________________________________
25. transgenic animals
__________________________________________
_________________________________________
26. Human Genome Project
__________________________________________
_________________________________________
27. gene therapy
_________________________________________
_________________________________________
28. Who was Gregor Mendel and what did he study? What is his nickname?
______________________________________________________________
29. How does his work affect us today? In other words what did we learn from him?
__________________________________________________________________
__________________________________________________________
30. There are 4 possible blood types; A, B, AB, O but, because A and B blood types
are both equally dominant we call them ___ - ___________.
31. Which blood type is the recessive trait? _____
Cell division has two main purposes. What are they?
32. ______________ and ________________ = mitosis
33. ________________________________ = meiosis
34. Draw the symbol used to show the carriers of the trait. ________
35. Are the carriers male or female? ___________
How do you know?______________________________
36. Draw the symbol used to show the people who had hemophilia. ______
37. Are the people who had hemophilia male or female? ____________
38. How many generations does this royal pedigree chart show? _______
39. How many children did Alice have? ________