Study finds epigenetic traits break Mendel's genetic laws

Filipino

A federally funded mouse study has revealed that some inherited traits follow non-Mendelian patterns through epigenetic changes. The research identified hundreds of unexpected DNA methylation events across generations. It also documented the first known natural paramutation in a mammal.

Researchers at Johns Hopkins University and Texas A&M University tracked DNA methylation in three generations of mice. They examined 12 known inheritance patterns and found that about 7 percent did not follow classic Mendelian rules. Among these were 54 cases where methylation appeared in offspring without being present in either parent.

Mga Kaugnay na Artikulo

Scientific illustration depicting mitochondrial 'pearling' process evenly spacing mtDNA nucleoids via calcium influx.
Larawang ginawa ng AI

EPFL study links mitochondrial “pearling” to the even spacing of mtDNA nucleoids

Iniulat ng AI Larawang ginawa ng AI Fact checked

Scientists at EPFL report that a transient shape change in mitochondria—known as “pearling,” in which the organelle briefly forms bead-like constrictions—can redistribute clusters of mitochondrial DNA (mtDNA) into more evenly spaced nucleoids. The work, published April 2, 2026 in Science, suggests the process is triggered by calcium influx into mitochondria and may help explain how cells maintain robust mtDNA organization, a feature implicated in a range of mitochondrial-related disorders.

Study shows cloned mice accumulate harmful mutations

A 20-year experiment cloning mice has revealed that clones develop significantly more genetic mutations than naturally reproduced mice, accumulating to fatal levels after multiple generations. Researchers led by Teruhiko Wakayama at Yamanashi University in Japan found over 70 mutations per clone generation on average, three times higher than in controls. The findings, published in Nature Communications, raise concerns for applications in farming, conservation and de-extinction efforts.

Study links birth epigenetic markers and early gut bacteria with autism- and ADHD-related traits by age 3

Iniulat ng AI Fact checked

A study involving infants in Hong Kong found that DNA methylation patterns measured at birth were associated with how the gut microbiome developed during the first year of life, and that certain combinations were linked to autism- and ADHD-related behavioral signs at 36 months.

Agham

South Korean researchers claim magnetic gene switch breakthrough amid skepticism

Agham

Scientists find same genes drive butterfly mimicry over 120 million years

Kalusugan

Cold Spring Harbor Lab scientists describe a non-repeating genetic “master clock” guiding C. elegans development

DNA study uncovers third ancestral group in Japanese population

A large-scale genetic analysis has identified a previously overlooked third ancestral group in Japan, challenging the long-held dual origins theory. Researchers linked the new ancestry to the ancient Emishi people of northeastern Japan. The findings also connect archaic DNA from Neanderthals and Denisovans to modern health conditions.

June 05, 2026 13:28

US team reports base editing results in human embryos

June 05, 2026 10:12

Scientists create mice with rat chromosome from frozen tissue

May 29, 2026 11:44

University of Michigan study challenges neutral theory of evolution

May 07, 2026 11:30

Twin study shows genetics shape success more than upbringing

April 13, 2026 11:00

Genes account for half of human lifespan variation, study shows

Gumagamit ng cookies ang website na ito

Gumagamit kami ng cookies para sa analytics upang mapabuti ang aming site. Basahin ang aming patakaran sa privacy para sa higit pang impormasyon.
Tanggihan