What is meiosis?
Meiosis

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Science
•
7th - 12th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
Back
Meiosis is a type of cell division that reduces the chromosome number by half, resulting in four genetically diverse gametes (sperm or eggs). It consists of two consecutive divisions: meiosis I and meiosis II.
2.
FLASHCARD QUESTION
Front
What are the main phases of meiosis?
Back
The main phases of meiosis are: Meiosis I (which includes Prophase I, Metaphase I, Anaphase I, and Telophase I) and Meiosis II (which includes Prophase II, Metaphase II, Anaphase II, and Telophase II).
3.
FLASHCARD QUESTION
Front
What occurs during Prophase I?
Back
During Prophase I, homologous chromosomes pair up and exchange genetic material through a process called crossing-over, leading to genetic variation.
4.
FLASHCARD QUESTION
Front
What is crossing-over and why is it important?
Back
Crossing-over is the exchange of genetic material between homologous chromosomes during Prophase I of meiosis. It is important because it increases genetic diversity in the resulting gametes.
5.
FLASHCARD QUESTION
Front
What happens during Metaphase I?
Back
During Metaphase I, homologous chromosome pairs align at the cell's equatorial plane, preparing for separation.
6.
FLASHCARD QUESTION
Front
What is the significance of Anaphase I?
Back
In Anaphase I, homologous chromosomes are pulled apart to opposite poles of the cell, reducing the chromosome number by half.
7.
FLASHCARD QUESTION
Front
What occurs during Telophase I?
Back
During Telophase I, the cell divides into two daughter cells, each with half the number of chromosomes, and the nuclear membrane may reform.
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