Select the correct statement/s with respect to mechanism of sex determination in Grasshopper.
A: It is an exam

Question

Select the correct statement/s with respect to mechanism of sex determination in Grasshopper.
A: It is an example of female heterogamety
B: Male produces two different types of gametes either with or without X chromosomes.
C: Total number of chromosomes (autosomes and sex chromosomes) is same in both males and females.
D: All eggs bear an additional X chromosome besides the autosomes.

Choose the correct answer from the options given below:

Accepted Answer

:
- Statement A is False: Grasshoppers exhibit male heterogamety (XO type), where males produce different types of gametes (with or without X), while females (XX) are homogametic .
- Statement B is True: Males have an XO sex chromosome composition, so they produce two types of sperms: 50% with an X-chromosome and 50% without it .
- Statement C is False: Females have a pair of X-chromosomes (XX), while males have only one (XO). Therefore, the total number of chromosomes is not equal; males have one less chromosome than females .
- Statement D is True: Since females are XX (homogametic), all eggs produced bear an X-chromosome besides the autosomes .

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