CBSE 2025, Set 1

Question

Based on the cross identifying abnormalities '1' and '2', distinguish between the physical symptoms of these two disorders.

Edvaya · Accepted Answer

The correct answer is Subjective. **SOLUTION** **Differences between Abnormality 1 (Klinefelter's Syndrome) and Abnormality 2 (Turner's Syndrome):** | Klinefelter's Syndrome ($44+XXY$) | Turner's Syndrome ($44+XO$) | | :--- | :--- | | It involves the presence of an extra copy of the X chromosome (Trisomy of sex chromosomes). | It involves the absence of one of the X chromosomes (Monosomy of sex chromosomes). | | Occurs in males (sterile males). | Occurs in females (sterile females). | | Characterized by overall masculine development but with expressed feminine features, such as the development of breasts (Gynaecomastia), and tall stature. | Characterized by rudimentary ovaries, lack of secondary sexual characters, short stature, and underdeveloped feminine traits. |

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Biology > Reproduction And Genetics > Principles Of Inheritance And Variation

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