In reciprocal hybrid crosses,the heterogametic sex is typically sterile while the homogametic sex is not.This phenomenon is referred to as

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This phenomenon is known as Haldane's rule, which states that when in the offspring of a hybrid cross, one sex is sterile or inviable, it is the heterogametic sex. In most organisms, females are homogametic (XX) and males are heterogametic (XY), so this rule predicts that the sterile or inviable offspring will be male. This is thought to be due to the fact that the sex chromosomes carry genes that affect reproduction and development, and when these genes are disrupted by hybridization, they have a greater effect on the heterogametic sex.

In Reciprocal Hybrid Crosses,the Heterogametic Sex Is Typically Sterile While