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Explain XX-XO type of sex determination....

Explain XX-XO type of sex determination.

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XX-XO method of sex determination is seen in bugs, some insects such as cockroaches and grasshoppers. The female with two X chromosome are homogametic (XX) while the males with only one X chromosome are heterogametic (XO). The presence of an unpaired X chromosome determines the male sex. The males with unpaired .X. chromosome produce two types of sperms, one half with X chromosome and other half without X chromosome. The sex of the offspring depends upon the sperm that fertilizes the egg.
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