Reference no: EM132486289

Two parents have two children, both of whom have a degenerative muscular disorder, spinal muscular atrophy (SMA), which leads to muscle weakness and decrease in muscle mass. The parents do not exhibit any signs of the disease.

1. Explain the pattern of how SMA must be inherited and what the children and parents' genotypes must be.

2. The parents wish to have a third child and are contemplating adopting versus having a biological child. They seek help from a genetic counselor ask about the probability of having another child with SMA. What does the genetic counselor tell the parents? Use a diagram to determine probability.

Your house cat wakes you up meowing outside your closet. In the morning you discover that your cat has found a mouse family living in your closet. The male mouse has black fur and has offspring with a female mouse with white fur. All of the offspring of this pair has gray fur

1. What is the genotype of each parent and the offspring? Black mouse - BB or Bb. White mouse

2. What type(s) of genetic rules is at play here?

3. Show the Punnett square for the offspring of two gray mice and provide the phenotype ratio of the offspring