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XO, XY, ZW and haplodiploid type of sex ...

XO, XY, ZW and haplodiploid type of sex determination are respectively seen in :

A

Parrot, cockroach, Melandrium and honey bee

B

Grasshopper, Drosophila , Aptenodytes, and Apis

C

Grasshopper, Pavo, man and honey bee

D

Grasshopper, hen , cockroach and Apis

Text Solution

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The correct Answer is:
To solve the question regarding the sex determination systems (XO, XY, ZW, and haplodiploid) and their respective organisms, we can follow these steps: ### Step 1: Understand XO Sex Determination - **XO sex determination** is typically found in some insects where females have two X chromosomes (XX) and males have one X chromosome (XO). - **Example Organism**: Grasshopper. ### Step 2: Understand XY Sex Determination - **XY sex determination** is common in many animals, including humans, where females have two X chromosomes (XX) and males have one X and one Y chromosome (XY). - **Example Organism**: Drosophila (fruit fly). ### Step 3: Understand ZW Sex Determination - **ZW sex determination** is found in birds where females have one Z and one W chromosome (ZW) and males have two Z chromosomes (ZZ). - **Example Organism**: Peacock or Aptenodytes (a type of penguin). ### Step 4: Understand Haplodiploid Sex Determination - **Haplodiploid sex determination** is a system where unfertilized eggs develop into males (haploid) and fertilized eggs develop into females (diploid). - **Example Organism**: Honeybee (Apis). ### Step 5: Match the Organisms with the Sex Determination Types Now, we can match the sex determination types with the organisms: - **XO**: Grasshopper - **XY**: Drosophila - **ZW**: Aptenodytes (or other birds) - **Haplodiploid**: Honeybee (Apis) ### Step 6: Analyze the Options Now, let's analyze the options provided: - **Option A**: Potato, cockroach, malendrium, and honeybee - Incorrect. - **Option B**: Grasshopper, Drosophila, Aptenodites, and Apis - Correct. - **Option C**: Grasshopper, peacock, man, and honeybee - Incorrect. - **Option D**: Grasshopper, hen, cockroach, and Apis - Incorrect. ### Conclusion The correct answer is **Option B: Grasshopper, Drosophila, Aptenodites, and Apis**. ---
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