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Questions and Answers
What is the process whereby one cell divides into two genetically identical daughter cells?
What is the significance of meiosis?
Where do germ cells arrive by the end of the fifth week?
Which type of chromosomes are NOT part of the 22 pairs of autosomes?
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What is the process that reduces the number of chromosomes to half of the mother cell?
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What is the chromosomal formula for males?
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In males, what are the two types of sperms based on the presence of sex chromosomes?
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At what stage do human primordial germ cells become readily recognizable?
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Where does spermatogenesis take place?
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What is the process of formation of female gametes called?
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What is the first stage in spermatogenesis?
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What is the final stage in spermatogenesis before the formation of spermatozoa?
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Study Notes
Cell Division
- Mitosis is the process whereby one cell divides into two genetically identical daughter cells.
Significance of Meiosis
- Meiosis is significant because it reduces the number of chromosomes to half of the mother cell.
Germ Cell Development
- By the end of the fifth week, germ cells arrive at the gonads (ovaries or testes).
Chromosomes
- Sex chromosomes are not part of the 22 pairs of autosomes.
Chromosomal Formula
- The chromosomal formula for males is 44XY.
Sperm Types
- In males, there are two types of sperms based on the presence of sex chromosomes: X-bearing and Y-bearing.
Human Primordial Germ Cells
- Human primordial germ cells become readily recognizable at the third week of embryonic development.
Spermatogenesis
- Spermatogenesis takes place in the seminiferous tubules of the testes.
- The process of formation of male gametes is called spermatogenesis.
- The first stage in spermatogenesis is spermatogonia.
- The final stage in spermatogenesis before the formation of spermatozoa is spermatids.
Oogenesis
- The process of formation of female gametes is called oogenesis.
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Description
Test your knowledge of germ cell development in embryology. This quiz covers the origin, migration, and mitotic divisions of germ cells during embryonic development.
