Question

Sally was diagnosed with a rare genetic disorder. Her mother does not have the disorder, but her grandmother does. Which of the following must be true?

Sally's mother was never exposed to the disease.

The disorder must be passed through a dominant gene.

The disorder must be passed through a recessive gene.

The disease only develops in senior citizens.

Answer 1

The disorder must be passed through a dominant gene this happens because it comes from the first generation as the gene transfers through generations the chances to get the disease are lower

Step-by-step explanation:

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Answer 2

The disorder must be passed through a dominant gene this happens because it comes from the first generation as the gene transfers through generations the chances to get the disease are lower