What is the most likely mode of inheritance for the trai...

Question

What is the most likely mode of inheritance for the trait depicted in the following human pedigree?

Human pedigree chart illustrating inheritance patterns for a specific trait.

Accepted Answer

Hello, everyone. Here. We have a question that says a man to six with Melas syndrome wants to marry a woman to seven who is not affected with the syndrome. They to six and 27. This is a genetic counselor because the syndrome has impacted all of their Children of one of his 26 married sisters and the woman to seven is concerned that if they marry their Children may be affected as well. An intern working under the genetic counselor whom they visited made four observations after analyzing the pedigree given below, identify which observation of the intern is not correct. And on the screen, we have the pedigree, we have the first generation, we have a man, one and a female to two is affected. And then we have a male three and a female for neither of which are affected. And we have a second generation, a male one which is unaffected female to affected female, three affected male, four affected male, female, five affected male, six affected and female seven unaffected. And then we have the third generation female, one affected male to affected and male three affected. The pedigree shows that all of the siblings of the male are affected with this condition. The inheritance of Maaleh syndrome is maternal and not maternal. Since all the eventual individuals affected in the second generation, it suggests that the mother I two is home a place IQ. However, the observation that May LA syndrome will affect all the Children of 26 and 27 is incorrect because the inheritance is maternal. So it will not affect all the Children of 26 and 27. So our answer here is see Mailers Syndrome will affect all the Children of 26 and 27. Thank you for watching. Bye.

What is the most likely mode of inheritance for the trait depicted in the following human pedigree?

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