Which group of mice showed the most meiotic abnormalities in their oocytes? (Refer to picture)   A. Those in severely damaged plastic cages only   B. Those in mildly damaged plastic cages only   C. Those with damaged water bottles only   D. Those in damaged cages with damaged plastic water bottles   E. The control group

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Which group of mice showed the most meiotic abnormalities in their oocytes? (Refer to picture)
 
A. Those in severely damaged plastic cages only
 
B. Those in mildly damaged plastic cages only
 
C. Those with damaged water bottles only
 
D. Those in damaged cages with damaged plastic water bottles
 
E. The control group
**Table: Impact of Caging Materials on Oocyte Abnormalities**

This table presents data on the relationship between different caging materials and the occurrence of oocyte abnormalities. The data is categorized based on the type and condition of the cages used, as well as the total number of oocytes observed and the number (percentage) of abnormalities found.

| **Caging Materials**                               | **Total Number of Oocytes** | **Abnormalities**       |
|----------------------------------------------------|----------------------------|-------------------------|
| Control: New cages with glass bottles              | 271                        | 5 (1.8%)                |
| Mildly damaged cages with glass bottles            | 401                        | 35 (8.7%)               |
| Severely damaged cages with glass bottles          | 149                        | 30 (20.1%)              |
| Damaged plastic bottles                            | 197                        | 53 (26.9%)              |
| Damaged cages with damaged plastic bottles         | 58                         | 24 (41.4%)              |

**Analysis:**

- The control group with new cages and glass bottles shows the lowest abnormality rate at 1.8%.
- As the condition of the cages worsens, particularly with the use of plastic bottles, the percentage of abnormalities increases significantly, reaching 41.4% in the most damaged conditions.
- This data emphasizes the impact of cage material and condition on oocyte health, suggesting a correlation between environmental quality and biological outcomes.
Transcribed Image Text:**Table: Impact of Caging Materials on Oocyte Abnormalities** This table presents data on the relationship between different caging materials and the occurrence of oocyte abnormalities. The data is categorized based on the type and condition of the cages used, as well as the total number of oocytes observed and the number (percentage) of abnormalities found. | **Caging Materials** | **Total Number of Oocytes** | **Abnormalities** | |----------------------------------------------------|----------------------------|-------------------------| | Control: New cages with glass bottles | 271 | 5 (1.8%) | | Mildly damaged cages with glass bottles | 401 | 35 (8.7%) | | Severely damaged cages with glass bottles | 149 | 30 (20.1%) | | Damaged plastic bottles | 197 | 53 (26.9%) | | Damaged cages with damaged plastic bottles | 58 | 24 (41.4%) | **Analysis:** - The control group with new cages and glass bottles shows the lowest abnormality rate at 1.8%. - As the condition of the cages worsens, particularly with the use of plastic bottles, the percentage of abnormalities increases significantly, reaching 41.4% in the most damaged conditions. - This data emphasizes the impact of cage material and condition on oocyte health, suggesting a correlation between environmental quality and biological outcomes.
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