Your project leader learns of a family whose infants had a rare disease characte

Question

Your project leader learns of a family whose infants had a rare disease characterized by extreme obesity, endocrine dysfunction, and red hair. Below is the pedigree, where filled-in shapes indicate people who had the disease. No other family members were ever known to have red hair. For convenience, offspring of couple 1 & 2 have been given numbers, and offspring of couple A & B have been given letters.  

Assume the disease is monogenetic, autosomal recessive and exhibits Mendelian inheritance. How many of the children from couple D/6 are likely to be carriers for the disease? Show your work below.

Explanation / Answer

Obesity is a disese in which the blood vessels of a person gets thickned due to deposition of cholesterol.

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