
In which organism female is XO and male is XX?
A. Bed bug
B. Grasshopper
C. Fumia
D. Sparrow
Answer
510k+ views
Hint: Heterogametic female and homogametic male is mainly found in different insects and birds. In other organisms such as humans, the male is heterogametic, and the female is homogametic.
Complete answer: Sex determination systems depend upon the presence of similar gametes or dissimilar gametes. Heterogametic sex of the species in which the sex chromosome is not the same whereas in homogametic sex, the sex chromosomes are similar. In organisms such as grasshoppers, crickets, and other insects the female sex is heterogametic i.e. XX and the male sex is homogametic i.e. XO. In males, the gametes produced have an X chromosome and the other gamete is without any chromosome O. This is an XX-XO sex-determination system in grasshoppers.
Hence, the correct option is (B) Grasshopper.
Note: In grasshoppers, the XX-XO sex-determination system is found i.e. one chromosome is absent in male. In birds, the male is homogametic (ZZ) and the female is heterogametic (ZW).
Complete answer: Sex determination systems depend upon the presence of similar gametes or dissimilar gametes. Heterogametic sex of the species in which the sex chromosome is not the same whereas in homogametic sex, the sex chromosomes are similar. In organisms such as grasshoppers, crickets, and other insects the female sex is heterogametic i.e. XX and the male sex is homogametic i.e. XO. In males, the gametes produced have an X chromosome and the other gamete is without any chromosome O. This is an XX-XO sex-determination system in grasshoppers.
Hence, the correct option is (B) Grasshopper.
Note: In grasshoppers, the XX-XO sex-determination system is found i.e. one chromosome is absent in male. In birds, the male is homogametic (ZZ) and the female is heterogametic (ZW).
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