About Careers Internship MedBlogs Contact us
Medindia LOGIN REGISTER
Advertisement

Identical Twins are Genetically Different: Study

by Sheela Philomena on November 13, 2012 at 8:45 PM
Font : A-A+

Identical Twins are Genetically Different: Study

New study sheds light on why identical twins are different. Researchers have found that even though identical twins supposedly share all of their DNA, they acquire hundreds of genetic changes early in development that could set them on different paths.

The findings may partly explain why one twin gets cancer while another stays healthy. The study also suggests that these genetic changes are surprisingly common.

Advertisement

"It's not as rare as people previously expected," said study presenter Rui Li, an epidemiologist at McGill University.

While past studies have looked at genetic changes, or mutations, in sperm and eggs, which can be passed on to offspring, very few studies have looked at somatic mutations.
Advertisement

These mutations, also called copy errors, can occur early in fetal development, but because they aren't in the sex cells (the X or Y chromosomes) of the fetus, they can't be passed on.

Other studies have shown that chemical modifications, or epigenetic effects, can change which genes are expressed over the years, one factor that renders twins not completely identical. Still, other work has shown that identical twins can have different gene mutations, but this study didn't determine how often they occur.

The study was recently presented at the American Society of Human Genetics meeting.

Source: ANI
Advertisement

Advertisement
News A-Z
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
What's New on Medindia
Can Weight Loss be Achieved by Drinking Water?
Can Exercise Counts Boost Your Life Counts? 
Prevent Hacking of Medical Devices: FDA Sounds Alarm
View all
Recommended Reading
News Archive
Date
Category
Advertisement
News Category

Medindia Newsletters Subscribe to our Free Newsletters!
Terms & Conditions and Privacy Policy.

More News on:
Multiple Pregnancy 

Most Popular on Medindia

Nutam (400mg) (Piracetam) Noscaphene (Noscapine) Indian Medical Journals Calculate Ideal Weight for Infants Drug Interaction Checker Sinopril (2mg) (Lacidipine) Pregnancy Confirmation Calculator Daily Calorie Requirements Drug - Food Interactions Selfie Addiction Calculator

Disclaimer - All information and content on this site are for information and educational purposes only. The information should not be used for either diagnosis or treatment or both for any health related problem or disease. Always seek the advice of a qualified physician for medical diagnosis and treatment. Full Disclaimer

© All Rights Reserved 1997 - 2022

This site uses cookies to deliver our services. By using our site, you acknowledge that you have read and understand our Cookie Policy, Privacy Policy, and our Terms of Use