MPSC Rajyaseva 2019 GS Paper 1 — Question 8
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नाकतोडा या किटकाच्या नर आणि मादी मध्ये किती सहलग्नता गट असतात ? How many linkage groups are present in the female and male grasshopper insect ?
1)04 आणि 04 / 04 and 04
2)10 आणि 10 / 10 and 10
3)12 आणि 12 / 12 and 12✓ Correct
4)23 आणि 24 / 23 and 24
The number of linkage groups in an organism is equal to its haploid number of chromosomes (n). In grasshoppers (XO sex determination system), females have 24 chromosomes (n=12) and males have 23 chromosomes (n=11/12 depending on counting, but typically linkage groups equal haploid sets: female has 12 and male has 11). Wait, standard answer for grasshopper is often 12 and 11 or similar, but here the correct answer key states 3 or specific pairing. Let's provide a clear standard genetic explanation.