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Sex Determination Video Lecture - Class 10
FAQs on Sex Determination Video Lecture - Class 10
| 1. What are the primary methods of sex determination in humans? |  |
Ans. In humans, sex determination primarily occurs through the presence of sex chromosomes. Typically, females have two X chromosomes (XX) and males have one X and one Y chromosome (XY). Additionally, hormonal influences during development also play a crucial role in determining sexual characteristics.
| 2. How does the Y chromosome influence male development? | |
Ans. The Y chromosome contains the SRY gene (Sex-determining Region Y), which triggers the formation of testes and the production of male hormones (androgens). These hormones are responsible for the development of male physical traits and reproductive structures during embryonic development.
| 3. What role do environmental factors play in sex determination? | |
Ans. While sex determination in mammals is primarily genetic, environmental factors can influence sex ratios in some species. For example, temperature can affect sex determination in certain reptiles, where warmer temperatures may lead to a higher proportion of one sex, but this is not typically applicable to mammals.
| 4. Can sex determination be affected by genetic disorders? | |
Ans. Yes, genetic disorders can impact sex determination and development. Conditions such as Turner syndrome (XO) and Klinefelter syndrome (XXY) result from atypical combinations of sex chromosomes, leading to variations in sexual development and characteristics.
| 5. What are the implications of understanding sex determination in medicine? | |
Ans. Understanding sex determination is crucial for medical genetics, as it helps in diagnosing and managing conditions related to sexual development disorders. This knowledge can also assist in reproductive health, fertility treatments, and addressing issues related to intersex variations.
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Sep 08, 2025
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