Question

QUESTION 11 For the following pedigree (Pedigree Tree II, used for following questions, too), decide whether a trait is inherited as an autosomal dominant, autosomal recessive, or X-linked recessive. - 2 - 모아 고 오오오 아 오 오오 11 12. 13 14 IV 1 2 13 oo Autosomal dominant Most likely autosomal recessive Most likely X-linked recessive Autosomal recessive X-linked recessive Either autosomal or X-linked recessive QUESTION 12 (Pedigree Tree II) Is it possible for the couple (Generation III individual 10 and 11) to have unaffected kids? Yes, it is possible. No, it is not possible It is dependent on the genotype of the wife It depends whether this trait is X-linked recessive trait or autosomal recessive trait QUESTION 13

Answer 1

11. Autosomal dominant

Autosomal - because the trait is equally passed on two daughters and sons from the father and also from the mother

Dominant - because the trait is present in all the generations, affected parents have affected progenies and vice versa

Sex linked - either more number of males or more number of females are affected

Recessive - not present in all the generations, affected parent have unaffected progenies and vice versa

Cytoplasmic (mitochondrial/organellar) - always transferred from the mother to all the progenies, father is never the donor because mitochondria is inherited only from the mother to the progeny and most of the cytoplasm in progeny is also inherited from the mother

Y linked - always transferred from the father to all the sons, mother is never the donor because females do not have Y chromosomes

12. 1st option

If 11 is Aa, than there can be an unaffectef child.

10 is aa.

Aa × aa

Gametes	a
A	Aa affected
a	aa unaffected

Please rate high.