Step 1: Understanding the Genetic Basis of Sex Determination:
In humans, the sex of the child is determined by the combination of sex chromosomes contributed by the father and the mother.
- The mother always contributes an X chromosome (because females have XX chromosomes).
- The father can contribute either an X chromosome or a Y chromosome (because males have XY chromosomes).
Step 2: Sex Chromosome Combinations:
- If the sperm from the father carries an X chromosome and fertilizes the egg from the mother (which always carries an X chromosome), the resulting child will be female (XX).
- If the sperm from the father carries a Y chromosome and fertilizes the egg, the resulting child will be male (XY).
Step 3: Probability of Male or Female Child:
Since the sperm from the father has an equal chance (50%) of carrying either an X or a Y chromosome, the probability of having a female child (XX) or a male child (XY) is 50% each.
Step 4: Conclusion:
The probability of having a male or a female child is 50%, which is determined by the random combination of the X or Y chromosome from the father with the X chromosome from the mother.
प्रादेशिक स्तर पर आयोजित होने वाली 100 मीटर की बाधा दौड़ में आपके मित्र को प्रथम स्थान मिला है। उसे बधाई देते हुए लगभग 40 शब्दों में एक संदेश लिखिए।
‘मेघला के आकार वाली पर्वत श्रृंखला ने पृथ्वी को चारों तरफ से घेर रखा है।’ – रेखांकित पदों की जगह उपयुक्त समस्तपद प्रस्तुत कीजिए तथा समास का नाम भी लिखिए।