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Meiosis I & II

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Questions and Answers

What is the purpose of meiosis I?

To separate chromatids

To reduce the number of chromosomes from diploid to haploid (correct)

To produce four identical gametes

To produce one oocyte and three polar bodies

What is the purpose of meiosis II?

To separate chromatids (correct)

To reduce the number of chromosomes from diploid to haploid

To produce four identical gametes

To produce one oocyte and three polar bodies

What is the difference between meiosis I and meiosis II?

Meiosis I reduces the number of chromosomes, while meiosis II separates chromatids (correct)

Meiosis I separates chromatids, while meiosis II reduces the number of chromosomes

Meiosis I and meiosis II both reduce the number of chromosomes

Meiosis I and meiosis II both separate chromatids

Which cells receive two copies of either the maternal or paternal chromosome in meiosis I?

Daughter cells Signup and view all the answers

What is the result of meiosis in males?

Four identical gametes that develop into functional sperm Signup and view all the answers

What is the result of meiosis in females?

One oocyte and three polar bodies Signup and view all the answers

What happens if fertilization takes place in females?

The oocyte completes meiosis II, yielding an ovum Signup and view all the answers

What is the process of meiosis in males called?

Spermatogenesis Signup and view all the answers

What is the production of female oocytes called?

Oogenesis Signup and view all the answers

What is the term used to describe the uneven distribution of cytoplasm among the four cells produced in meiosis II?

Unequal cytokinesis Signup and view all the answers

What is the term used to describe the separation of maternal and paternal chromosomes in meiosis I?

Reductional division Signup and view all the answers

How many haploid cells are produced in meiosis II?

Four Signup and view all the answers

Study Notes

Meiosis I begins with prophase I and ends with the separation of maternal and paternal chromosomes.
In meiosis I, each daughter cell receives two copies of either the maternal or paternal chromosome.
The first meiotic division is called a reductional division because it reduces the number of chromosomes from diploid to haploid.
Meiosis II is an equational division that separates chromatids and yields four haploid cells.
The cytoplasm may not be evenly distributed among the four cells.
In males, meiosis produces four identical gametes that develop into functional sperm.
In females, meiosis produces one oocyte and three polar bodies.
If fertilization takes place, the oocyte completes meiosis II, yielding an ovum.
Spermatogenesis is the process of meiosis in males.
Oogenesis is the production of female oocytes.