Which members of the family above are afflicted with Huntington\'s Disease? ____
ID: 169474 • Letter: W
Question
Which members of the family above are afflicted with Huntington's Disease? ___________ There are no carries for Huntington's Disease- you either have it or you don't. With this in mind, is Huntington's disease caused by a dominant or recessive trait? __________ 3. How many children did individuals 1-1 and 1-2 have? _____________ How many girls did II-1 and II-2 have? How is individual III-2 and II-4 related? How many have Huntington's Disease? ___________ The pedigree to the right shows the pacing on of Hitchhiker's Thumb in a family. Is this, trait dominant or recessive? __________ How do you know? How are individuals III-1 and III-2 related? ____________ Name 2 individuals that have hitchhiker's thumb. _____________ Name 2 individuals that were carriers of hitchhiker's thumb. _________ Is it possible for individual IV-2 to be a carrier?__________ Why? __________ The pedigree to the right shows the passing on of colorblindness. What sex can ONLY be earners of colorblindness? __________ With this in mind, what kind of non-mendelian trait is colorblindness? ___________ Why does individual IV-7 have colorblindness? ___________ Why do all the daughters in generation II carry the colorblind gene? Name 2 IV generation colorblind males. ____________Explanation / Answer
1) as affected is indicated by dark circles and square hence the affected individuals are I-1,II-2,3,7, III-3.
2)There are no carriers that means it is an autosomal dominant trait because the person having even one allel of disease he or she will suffer form disease.
3)They have 6 children II-2,3,4,6,7,8.
4) They have 2 daughters denoted by circle.One is affected (dark circle) by hnutington disease.(III-3)
5) They are brother and sister (III-2 and II-4).III -5 is the grandson of I-2.
6) It is a recessive trait.
7) there is the skip of generation and in recessive trait unaffected parents may have affected child.
8) They are husband and wife.single line between square(male) and circle(female) indicates mating.
9) IV - 1 and 3 are affected.
10) III-1 and 2 are the carrier of disease because they are having affected child.
11) YES, it is possible that she might be a carrier because her brother and sister are affected so there is a possibility that her parents are carrier.
12)Only female can be the carrier of coolourblindness because it is a X linked recessive trait
13) It is sex linked specifically X linked in human.
14) IV -7 have colourblindess because her mother is heterozygous(XXC) and father is diseased(XCY) so there is possibility that she become affected
15) Because father is affcted (XCY) and he will surely give his one X chromosome to his daughters that's why they all are carrier.
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