Identify the location of meiosis and chromosomes number in a daughter cell after a complete meiotic division؟
إجابة الطالب المختصرة من خلال موقع بوابة الإجابات هي
(D) Germ cells, 23 pair chromosomes.
Here's a breakdown of meiosis location and chromosome number:
**Location of Meiosis:**
* **Animals:** Occurs in the **reproductive organs** (gonads). Specifically, within:
* **Ovaries:** In females, where oocytes (egg cells) are produced.
* **Testes:** In males, where spermatocytes (sperm cells) are produced.
* **Plants:** Occurs in the **reproductive structures:**
* **Ovaries (ovules):** In the female part of the flower, producing egg cells.
* **Anthers:** In the male part of the flower, producing pollen grains (containing sperm cells).
* **Fungi and Protists:** Varies depending on the life cycle. Meiosis can occur at different stages, sometimes immediately after fertilization (zygotic meiosis) or before gamete formation (gametic meiosis).
**Chromosome Number in Daughter Cells After Meiosis:**
* After a complete meiotic division (Meiosis I and Meiosis II), the resulting daughter cells (gametes or spores) have **half the number of chromosomes** as the original parent cell. This is called the **haploid (n) number** of chromosomes.
* For example:
* If the parent cell is diploid (2n = 46 chromosomes in humans), each daughter cell after meiosis will have n = 23 chromosomes.
* If the parent cell is diploid (2n = 20 chromosomes in a certain plant), each daughter cell after meiosis will have n = 10 chromosomes.
**In summary:**
| Feature | Description |
|------------------|--------------------------------------------------------------------------|
| Location | Reproductive organs/structures (ovaries, testes, anthers, ovules) |
| Chromosome Number| Half the number of the parent cell (haploid, n) |
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