2. Mendel's Laws of Inheritance
Pedigrees
47PRACTICE PROBLEM
Identify which of the following pedigrees correctly demonstrates the inheritance of two linked genes on X-chromosomes, the Xg blood group and inherited recessive episodic muscular weakness (EMWX), when a male with Xg+ marries a female who is heterozygous for both Xg and EMWX. The genotype of each individual's "Xg blood group" is presented below. (Note: Xg+ is linked with the dominant allele of EMWX).
![](https://lightcat-files.s3.amazonaws.com/problem_images/e7fc8fd973afd55e-1675073943728.jpg)
Identify which of the following pedigrees correctly demonstrates the inheritance of two linked genes on X-chromosomes, the Xg blood group and inherited recessive episodic muscular weakness (EMWX), when a male with Xg+ marries a female who is heterozygous for both Xg and EMWX. The genotype of each individual's "Xg blood group" is presented below. (Note: Xg+ is linked with the dominant allele of EMWX).