This passage describes the myotonia congenita trait in goats:

Myotonia congenita is a condition that causes temporary muscle stiffness. When goats with myotonia congenita attempt to run from a resting position, their leg muscles often stiffen, causing them to fall over. Because of this behavior, these goats are referred to as fainting goats. Myotonia congenita is also found in other mammals, including horses, cats, and humans.
In a group of goats, some individuals have myotonia congenita and others do not. In this group, the gene for the myotonia congenita trait has two alleles. The allele M is for having myotonia congenita, and the allele m is for not having myotonia congenita.
Asriel, a goat from this group, does not have myotonia congenita. Asriel has two alleles for not having myotonia congenita.
Based on this information, click the blue words to correct any errors in the text.
Asriel's genotype for the myotonia congenita gene is mm.
Asriel has myotonia congenita. This is Asriel's phenotype for the myotonia congenita trait.
Asriel is homozygous for the myotonia congenita gene

Asriel's genotype for the myotonia congenita gene is mm.

Asriel does not have myotonia congenita. This is Asriel's phenotype for the myotonia congenita trait.
Asriel is homozygous for the allele m for not having myotonia congenita.