Rebecca went to a genetic counselor. When she had testing done she found that she was a carrier for the disease Tay Sachs. She showed no signs of the disorder; but she could pass the trait on to her offspring. Which of the following would correctly represent Rebecca’s genotype? NN
Nn
nn
Nt

Nn

Explanation:

Tay-Sachs disease is an inheritable genetic disorder that results in the destruction of nerve cells in the brain and spinal cord. It's caused by the absence of an enzyme that helps break down fatty substances called gangliosides. Their buildup results in the destruction of nerve cells.

Tay-Sachs is inherited in an autosomal recessive manner. This means that a person needs to have two recessive alleles (nn) in order to inherit it. Rebecca is a carrier of the disease but isn't actually ill. This means that she has one recessive (n) and one dominant (N) allele. Thus, her genotype is Nn.

other information encoded in your genes might distinguish you from the others in the group