Creator: Dr. Reeja Tharu
Keywords: genetic counseling, genes, Huntington's disease, genetic disorders, infertility,miscarriage, Down's syndrome, DNA, alpha-fetoprotein, pedigree, cytogenic diagnosis, molecular diagnosis, polymerase chain reaction, mendelian inheritance, autosomal recessive,autosomal dominant,X-linked recessive, X-linked dominant,non-mendelian inheritance,polygenic defects, multifactorial inhertance

Written by Dr. Reeja Tharu, M.Phil.,Ph.D
Medically Reviewed by The Medindia Medical Review Team on Sep 18, 2020

Genetic Counseling - Understanding The Pattern Of Genetic Inheritance

The X – linked inheritance can have some interesting result depending on the X –chromosomes of mother or father that is Genetic disorders can be transmitted/affected through the somatic or sex chromosomes.

These disorders can be called " Dominant or Recessive". The chances of getting a dominant disorders in an offspring is 50% because both mother and father carry the defective gene. In case of Recessive disorders the chance of inheritance are only 25% as only one of the two parents carries the defective gene. Some genetic disorders are only transmitted through the mother or her X- chromosomes and hence are called X – linked disorders.

Published on Jan 25, 2016
Last Updated on Sep 18, 2020

Comments

nagarasan Monday, December 28, 2009

I am Nagarasan in India. I am affected with congental myotonia from childhood. What genetic counseling is there for curing this in gene theraphy.

@Guest Thursday, March 5, 2015

Gene therapy is still not an approved therapy in human beings.

However, limited symptomatic treatment may be available.

Also, if you have the genetic confirmation of the disorder, you can potentially prevent the future generation from inheriting the same condition.

Regards,

Dr. Risha Nahar
Genetic Consultant

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