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hoa [83]
3 years ago
5

ONLY ANSWER IF YOURE SURE

Biology
2 answers:
OleMash [197]3 years ago
8 0
The answer is 100%. Three are observable, but the fourth is just a carrier.
olga2289 [7]3 years ago
5 0

Answer: <em>D.</em> <em>100%.</em>

Explanation:

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

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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