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Sagot :
1.primary oocytes
- diploid (2 complete sets of chromosomes)
- 'formed' from oogonia during the process of oogenesis
* primordial follicles consist of a primary oocyte + a single layer of squamous follicle cells
* primary follicles consist of a primary oocyte + 1/several layers of cuboidal follicle cells
2. secondary oocytes
- haploid (1 complete set of chromosomes)
- developed from the primary oocyte undergoing meiosis I to form a secondary oocyte + a tiny first polar body
* found in the matured Graafian follicle
* begins meiosis II & stops at metaphase II upon ovulation & only continues upon fertilisation
- diploid (2 complete sets of chromosomes)
- 'formed' from oogonia during the process of oogenesis
* primordial follicles consist of a primary oocyte + a single layer of squamous follicle cells
* primary follicles consist of a primary oocyte + 1/several layers of cuboidal follicle cells
2. secondary oocytes
- haploid (1 complete set of chromosomes)
- developed from the primary oocyte undergoing meiosis I to form a secondary oocyte + a tiny first polar body
* found in the matured Graafian follicle
* begins meiosis II & stops at metaphase II upon ovulation & only continues upon fertilisation
Assuming the options are:
-> A. A primary oocyte contains 46 chromosomes, while a secondary oocyte contains 23 chromosomes.
B. A primary oocyte is produced after birth, while a secondary oocyte is produced before birth.
C. A primary oocyte develops in both men and women, while a secondary oocyte develops only in women.
D. A primary oocyte is the product of meiosis, while a secondary oocyte is the product of mitosis.
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