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M.sc.Elaf Qussay: Meiosis and Cell Cycle Quiz

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M.sc.Elaf Qussay: Meiosis and Cell Cycle Quiz

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Questions and Answers

What is the purpose of meiosis?

To maintain a constant chromosome number in the species (correct)

To randomly distribute chromosomes to daughter cells

To produce diploid cells from haploid cells

To increase the number of chromosomes in gametes

What is the chromosome number in human somatic cells?

138

46 (correct)

What is the chromosome number in human gametes?

23 (correct)

138

What is the purpose of having homologous chromosomes?

To ensure the same gene is present on both chromosomes (C) Signup and view all the answers

What is the result of the fusion of an ovum and a sperm?

A diploid cell (B) Signup and view all the answers

What is the significance of genetic variability in a population?

It increases the chances of survival and adaptation of the population (B) Signup and view all the answers

What is the process that occurs during the S phase preceding meiosis?

Replication of DNA (B) Signup and view all the answers

Which phase of Meiosis I involves the formation of bivalents consisting of four chromatids?

Zygotene (C) Signup and view all the answers

What is the chromosome number reduced to during Meiosis I?

1n (haploid) (A) Signup and view all the answers

In which phase of Meiosis I do homologous chromosomes start to separate but remain attached by chiasmata?

Diplotene (C) Signup and view all the answers

What occurs in Metaphase I of Meiosis?

Alignment of paired chromosomes at the equatorial plate (D) Signup and view all the answers

During which phase of Meiosis I do homologous chromosomes continue to separate and chiasmata move to the ends of the chromosomes?

Diakinesis (C) Signup and view all the answers

What is the main function of the spindle microtubules during meiosis?

To move the chromosomes to the opposite poles of the cell (B) Signup and view all the answers

What is the key event that occurs during anaphase I of meiosis?

The homologous chromosomes separate and move to opposite poles (C) Signup and view all the answers

What is the primary difference between meiosis I and meiosis II?

Meiosis I involves the separation of homologous chromosomes, while meiosis II involves the separation of sister chromatids (A) Signup and view all the answers

What is the key event that occurs during metaphase II of meiosis?

The chromosomes align at the equator of the cell (D) Signup and view all the answers

What is the key event that occurs during anaphase II of meiosis?

The sister chromatids separate and move to opposite poles (A) Signup and view all the answers

What is the final outcome of meiosis II?

Four haploid daughter cells (C) Signup and view all the answers