4 years ago

ONLY ANSWER IF YOURE SURE

Biology

2 answers:

OleMash [197]4 years ago

8 0

The answer is 100%. Three are observable, but the fourth is just a carrier.

olga2289 [7]4 years ago

5 0

Answer: D. 100%.

Explanation:

Cystic Fibrosis is an Autosomic Recessive Disorder. The family pedigree chart shows that the Mother is a Carrier (Aa) and the Father has the disease (aa).

The offspring of both parents is affected by 100%.

75% have the disease (2 female, 1 male)

25% are carriers (1 male)

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