Children of male with HD allele and a phenotypically normal mom

Related BrainMass Solutions

• In what cases is disease only inherited from the mother and only to her sons...

  So if you have a normal father (X-Y) and a mother who is carrying the disease allele on one of her Xs (Xd-X), their kids will be: boys: 50% Xd-Y (disease X from mom, Y from dad - he has the disease), 50% X-Y (normal X from mom, Y from dad - he's normal

• Paternity Testing

  There are too many loci for which John doesn't have an allele in common with one or both of the children (see D8S1179 and D18S51 for example). 2 George is the father of both children. 
 I think that this is a likely possibility.

• Problem Set

  A man with achondroplasia, which is an autosomal dominant condition, marries a phenotypically normal woman. The man's mother did not suffer from achondroplasia. A.

• Heredity of Life on Earth

  Choose a human trait which follows Mendelian genetics; controlled by a simple gene with a dominant and a recessive allele. Describe this trait; either a common trait or one that is a disorder.

• Mendel/Punnett Square/Genotypes

  If I'm Gl/Gl (totally phenotypically and genotypically normal) then I am not a carrier and cannot pass on the defective allele to any children that I might have. On the other hand, if I am Gl/gl, then I am just like my parents, i.e. a carrier.

• Genetics - punnett square, recessive mutant allele

  They have three children, one with type A, one with type AB, and one with type B. Relatives suspect that one of the children was adopted. a. What are the parent's blood genotypes? b. Which child was adopted?

• Genetics Problem Set on Patterns of Inheritance

  Normal-visioned albino woman must be X^CX^Caa where X^C means X with a superscript C. The X^C allele is the normal vision allele on the X chromosome, and the "a" allele is the albino allele as already mentioned.

• Punnett Squares and Pedigrees

  On a Punnett square, this looks like (where x is the X-chromosome with liver disease, X is normal, and Y is the Y-chromosome): X Y X XX XY x Xx xY You would expect no female and half of the male children to have liver disease.

• Genetic Questions

  They have 2 children, one left-handed and brown-eyed and the other right-handed and blue-eyed. By a later marriage with another woman who is also right-handed and brown-eyed , this man has nine children, all of whom are right-handed and brown-eyed.