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statement-I : 2A +X0 genotype represents...

statement-I : 2A +X0 genotype represents turner syndrome in woman .
Statement-II : 2A +X0 genotype is normal male in grasshopper .

A

Only Statement-I is correct

B

Only Statement-II is correct

C

Both Statement-I and statement-II are correct .

D

Both Statement-I and statement-II are incorrect .

Text Solution

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The correct Answer is:
To analyze the given statements regarding Turner syndrome and the genotype of grasshoppers, we can break down the information step by step. ### Step 1: Understanding Turner Syndrome - **Statement I:** "2A + X0 genotype represents Turner syndrome in women." - Turner syndrome is a chromosomal condition that affects females, characterized by the absence of one X chromosome. The typical chromosomal makeup for a female is 46 chromosomes, which includes two X chromosomes (XX). In Turner syndrome, the genotype is represented as 44 autosomes (2A) and one X chromosome (X0), leading to a total of 45 chromosomes. - **Conclusion for Statement I:** This statement is correct because the genotype 2A + X0 does indeed represent Turner syndrome in women. ### Step 2: Understanding the Grasshopper Genotype - **Statement II:** "2A + X0 genotype is a normal male in grasshopper." - In grasshoppers, the typical male genotype can also be represented as 2A + X0. Grasshoppers have a different chromosomal arrangement compared to humans. In grasshoppers, the absence of one X chromosome (X0) does not lead to any syndrome; instead, it is a normal male condition. The total number of chromosomes in grasshoppers is 24 (2n = 24), and the male genotype with one X chromosome is healthy. - **Conclusion for Statement II:** This statement is also correct because the genotype 2A + X0 represents a normal male in grasshoppers. ### Final Conclusion Both statements are correct: - Statement I is correct regarding Turner syndrome in women. - Statement II is correct regarding the normal male genotype in grasshoppers.
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