Question

Why it is virtually impossible for a baby girl to be born with Norrie disease.

Answer 1

The gene that has the wrong plan for the important growth factor in Norrie's Disease is on the X chromosome. If a girl (XX) has one X chromosome that does not work she will be protected from developing Norrie's Disease because she has a protective spare.

Step-by-step explanation:

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Answer 2

Answer: Norrie disease almost entirely affects males.

Explanation: Due to the X-linked recessive pattern of inheritance, Norrie disease affects almost entirely males. Only in very rare cases, females have been diagnosed with Norrie disease; cases of symptomatic female carriers have been reported.