In which of the following is XX-XO sex chromosome complement found?(a)

1.	In which of the following is XX-XO sex chromosome complement found?(a) Chimpanzee(b) Birds(c) Honeybee(d) Cockroach
Answer» Answer is : (d) Cockroach In cockroach, XX-XO sex chromosome complement is found. In this pattern, the female has two X-chromosomes (called XX) while male has only one X-chromosome (called XO). The X-chromosome is completely absent here. Thus, the presence of unpaired X-chromosome determines the masculine sex. The female produces only one type of eggs and male produces two types of sperms, i.e. 50% with one X-chromosome and 50% without any sex chromosome.

In which of the following is XX-XO sex chromosome complement found?(a) Chimpanzee(b) Birds(c) Honeybee(d) Cockroach

Answer»

Answer is : (d) Cockroach

In cockroach, XX-XO sex chromosome complement is found. In this pattern, the female has two X-chromosomes (called XX) while male has only one X-chromosome (called XO). The X-chromosome is completely absent here. Thus, the presence of unpaired X-chromosome determines the masculine sex. The female produces only one type of eggs and male produces two types of sperms, i.e. 50% with one X-chromosome and 50% without any sex chromosome.

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In which of the following is XX-XO sex chromosome complement found?(a) Chimpanzee(b) Birds(c) Honeybee(d) Cockroach

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