[UNIT 9 – MEIOSIS AND CHROMOSOME ASSORTMENT]
Biology I Notes Outline
1. Define somatic cells –
2. Define gametes –
3. Each human somatic cell has __________ of chromosomes, __________________ total.
4. Two paired chromosomes are called ______________________________.
5. What does each homologous chromosome carry?
6. Label the diagram below.
7. What is this called?
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[UNIT 9 – MEIOSIS AND CHROMOSOME ASSORTMENT]
Biology I Notes Outline
8. The sex chromosomes are called __________ and __________.
9. Human females have: _________________________________.
10. Human males have: __________________________________.
11. What are autosomes?
12. Define gene –
a. A gene is made of a segment of ______________.
b. Each gene is located on a ___________________________.
c. Everyone has _______ copies of each gene. How?
13. What does diploid mean?
a. The shorthand for diploid is:
b. All __________________ cells are diploid.
14. What does haploid mean?
a. The shorthand for haploid is:
b. All __________ are haploid and have _______________ total chromosomes.
15. Gametes are ____________ cells, containing only _________________________________.
a. How many total chromosomes is this?
b. This includes _____________________ and a ______________________________.
c. In a female egg, the sex chromosome is always ____________.
d. In a male sperm, the sex chromosome may be __________________.
16. The ovaries and testes produce eggs and sperm through __________________.
a. Gametes are the _____________________________________________________.
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[UNIT 9 – MEIOSIS AND CHROMOSOME ASSORTMENT]
Biology I Notes Outline
17. Define meiosis:
a. The resulting daughter cells are __________________.
18. What happens during fertilization?
Stages of Meiosis
19. Describe the cell at the end of interphase:
a. Is the cell diploid or haploid at this point?
i. The nucleus contains _________________ of chromosomes.
ii. Each chromosome is made of ________________________________.
20. Fill in this table for the different stages of meiosis:
Stage of Mitosis
What Happens?
What Does it Look Like?
Prophase I
Crossing-over
(part of prophase I)
Metaphase I
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[UNIT 9 – MEIOSIS AND CHROMOSOME ASSORTMENT]
Biology I Notes Outline
Anaphase I
Telophase I and
Cytokinesis
Prophase II
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[UNIT 9 – MEIOSIS AND CHROMOSOME ASSORTMENT]
Biology I Notes Outline
Metaphase II
Anaphase II
Telophase II and
Cytokinesis
21. What does mitosis produce?
22. What does meiosis produce?
23. Meiosis allows _______________________ of chromosomes.
a. This produces cells that are ________________________________________
______________________________________________________________.
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