REVIEW QUIZ 1 PERIOD 3

USE THE WORD BANK TO MATCH THE WORDS WITH THE DEFINITIONS.

1. Science of heredity:
2. The process in which the sperm and the egg create a zygote is called:
3. Not “true breeding”.  The cross-pollination of two flowers, with the offspring having two different alleles (heterozygote) it is called:  
4. Plants that perform self-pollination, they are homozygote, not a hybrid, they are:
5. When a plant pollinates itself it is called:
6. When stamens are cut from a plant and pollinate a different plant, it is called:
7. A trait:
8. Different forms of a gene:
9. Eggs and sperm are:
10. Alleles that are the same (dominant-dominant or recessive-recessive):
11. Different alleles (dominant-recessive):
12. The way genotype expresses physically:
13. Your genes, your alleles are called:
14. When an offspring shows a trait that is somewhere in between two alleles it is called (red flower, white flower, pink offspring):
15. When an offspring shows both traits of both parents it is called (instead of just the one dominant):
16. When a trait is ruled by more than two alleles:
17. Cells that have two sets of chromosomes (full genetic material):
18. Cells that have only one set of chromosomes (half genetic material):
19. Process in which sex cells are made, cells divide:
20. Process in which chromosomes from both parents exchange genetic material:
21. Fertilized egg (by sperm):
22. Genetic code:
23. Group of a phosphate, deoxyribose and a nitrogenous base (in DNA):
24. Adenine, guanine, cytosine, thymine are:
25. DNA tightly packed, ready for cell division: 

Answer the following questions.

1. How many chromosomes do humans have?
2. Who was Gregor Mendel?
3. What are the differences between mitosis and meiosis?
4. Differences and similarities between RNA and DNA.
5. What are the 3 types of RNA and their function?
6. Write the steps of the protein synthesis.  Transcription and translation.

Write HE if the alleles are heterozygous or HO if they are homozygous.

1. WW

2. Ww

3. PP

4. dd

5. Cc

6. Gg

Write the genotype of the following organisms.

• Widow’s peak is a dominant trait.
• Widow’s peak:  _______ ________
• No widow’s peak: _______
• Freckles is a dominant trait.
• Freckles: _______ _______
• No freckles: ________

Write the phenotype of the following genotypes

• Cleft chin is a dominant trait.
• Cc
• CC
• cc
• Dimples is a dominant trait.
• dd
• DD
• Dd

HEREDITY PROBLEMS

1. Round seeds are dominant to wrinkled seeds.  Show the cross for a pure breeding round seed with a pure breeding wrinkle seed plant.  

What percentage of the offspring will be round seeded? 

What percentage will be heterozygous?

2. Show the cross of a two heterozygous round seeded plants.

What percentage if the offspring will be round? 

What percentage will be homozygous?

3. Show the cross of a heterozygous round seed plant with a homozygous round seed plant. 

What percentage of the offspring will be wrinkled? 

What percentage will be homozygous?

FILL IN THE BLANKS WITH THE CORRECT SEQUENCE