Login

Join for Free!
117460 members


Genetics Pedigree Help Required

Genetics as it applies to evolution, molecular biology, and medical aspects.

Moderator: BioTeam

Genetics Pedigree Help Required

Postby TheBell » Fri Mar 21, 2014 8:49 pm

Based on the information in the pedigree of Family B, is inheritance of this hearing loss trait consistent with an autosomal dominant or autosomal recessive pattern? (Tip: assume autosomal dominant and assign genotypes of affected and unaffected individuals, then assume autosomal recessive and assign genotypes of affected and unaffected individuals.)
Is this hearing loss trait X-linked recessive? Justify your answer based on expected genotypes if this were the inheritance pattern.
Is this hearing loss trait X-linked dominant? Justify your answer based on expected genotypes if this were the inheritance pattern.

I am quite sure that this pedigree does not display x-linked recessive or x-linked dominant patterns. My question is how can you tell whether this is an autosomal dominant or an autosomal recessive pattern? Can you not have, if it is autosomal dominant, each affected individual as heterozygous and each unaffected individual homozygous recessive; and if it is autosomal recessive you reverse it so that each affected individual is homozygous recessive and each unaffected individual is heterozygous? It seems like either pattern fits the pedigree.

Pedigree.png
(9.14 KiB) Not downloaded yet
TheBell
Garter
Garter
 
Posts: 1
Joined: Fri Mar 21, 2014 8:25 pm

Return to Genetics

Who is online

Users browsing this forum: No registered users and 3 guests

cron