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Question 13

Biology HL Paper 1 (May 2024, TZ2)

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  1. Nonsyndromic Hearing Loss and Deafness (DFNB1) is an inherited cause of deafness in humans. The pedigree chart shows the inheritance of DFNB1 in a family.
Pedigree chart showing the inheritance of DFNB1 in a family, with a key indicating unaffected/affected females and males. Relevant to question 13.
Pedigree chart showing the inheritance of DFNB1 in a family, with a key indicating unaffected/affected females and males. Relevant to question 13.

Where is the DFNB1 allele found in family members with this condition?