Features
Unveiling the Code of Life: A Look into Genetics

by Dr. Charit Pethiyagoda
charit.pethiyagoda@gmail.com
Genetics, a captivating branch of biology, delves into the core of what defines us. It explores genes, the microscopic instructions encoded in our DNA, and how these instructions are transmitted from parent to offspring. Beyond inheritance, genetics examines the symphony of genes, their variations, and their interplay with the environment, shaping everything from our physical traits to our susceptibility to diseases.
The story of genetics begins with Gregor Mendel, a 19th-century monk who experimented with pea plants. Through careful observation and breeding experiments, Mendel uncovered the fundamental principles of heredity, now known as Mendelian genetics. He proposed that traits are inherited through discrete units, later called genes, which are passed from parents to offspring in predictable patterns. This groundbreaking work laid the foundation for modern genetics.
The discovery of DNA, the molecule housing our genetic code, revolutionized our understanding of genes. In 1953, James Watson and Francis Crick unveiled the iconic double helix structure of DNA, a breakthrough based on crucial contributions from Rosalind Franklin and Maurice Wilkins. Genes are segments of DNA that code for specific proteins. While DNA stores information in a chemical code made up of four nucleotide bases: Adenine (A), Guanine (G), Cytosine (C), and Thymine (T), the specific sequence of these bases determines the instructions for building proteins, the workhorses of our cells.
Genes, however, are not static blueprints. They can undergo changes called mutations, which can arise due to errors in DNA replication or exposure to environmental factors like radiation and chemicals. While many mutations are neutral or even beneficial, others can lead to diseases and disorders. Mutations can be inherited, contributing to genetic variation and diversity within a population. This diversity is crucial for evolution, as it provides the raw material for natural selection to act upon, allowing organisms to adapt to changing environments.
The Human Genome Project, completed in 2003, was a landmark achievement in genetics. This international effort successfully mapped the sequence of the entire human genome, providing a reference for our genetic makeup. The project’s findings have had a profound impact on various fields, from medicine to forensic science. The ability to sequence genomes rapidly and accurately has opened up new avenues for research and applications, transforming our understanding of genetics and its role in health and disease.
The field of genetics has blossomed with powerful tools like DNA sequencing, which allows scientists to read the entire makeup of an organism’s DNA. This technology has provided a wealth of information about genes and their variations, leading to numerous applications. Genetic testing, for instance, allows for screening of genetic mutations associated with diseases like cystic fibrosis, Huntington’s disease, and certain cancers. Early diagnosis through genetic testing can enable better health management and personalized treatment plans.
Personalized medicine, a rapidly growing field, leverages genetic information to tailor medical treatments for individual patients. By understanding a person’s genetic makeup, doctors can predict how they might respond to specific drugs, thus maximizing treatment efficacy and minimizing side effects. Pharmacogenomics, the study of how genes affect a person’s response to drugs, is a cornerstone of personalized medicine, promising more precise and effective healthcare.
Gene therapy is an emerging field that aims to correct genetic defects by introducing healthy copies of genes to replace mutated ones. This approach holds promise for treating a wide range of genetic disorders, including muscular dystrophy, hemophilia, blood disorders, and even some forms of cancer. Although still in its early stages, gene therapy has already shown remarkable success in clinical trials, offering hope to patients with previously untreatable conditions.
In agriculture, genetic engineering has revolutionized the way we grow crops and raise livestock. Scientists can modify the genetic makeup of plants and animals to enhance desirable traits such as yield, nutritional value, and resistance to pests and diseases. Genetically modified organisms (GMOs) have become a vital part of modern agriculture, helping to ensure food security for a growing global population. However, the use of GMOs is not without controversy, with debates ongoing about their safety, environmental impact, and ethical implications.
The ethical implications of advancements in genetics are indeed profound. Issues like genetic discrimination, where individuals might be treated unfairly based on their genetic information, pose significant concerns. The potential for “designer babies,” where genetic engineering could be used to select for desired traits in unborn children, raises questions about the limits of human intervention in natural processes. The patenting of genes and genetic sequences also stirs debate about ownership and accessibility of genetic information.
Balancing the benefits of genetic engineering with potential risks requires careful consideration and robust ethical frameworks. Regulatory bodies around the world are tasked with ensuring that genetic technologies are developed and applied responsibly, with safeguards to protect individuals and society at large.
Epigenetics, a subfield of genetics, studies how environmental factors can influence gene expression without altering the DNA sequence itself. Epigenetic changes can affect how genes are turned on or off and can be influenced by factors such as diet, stress, and exposure to toxins. This knowledge sheds light on the complex interplay between genes and the environment, highlighting how lifestyle choices can impact not only our own health but also the health of future generations. Epigenetic research has revealed that experiences and environmental exposures can leave molecular “marks” on DNA, which can be passed down to offspring, affecting their development and disease risk.
Forensic genetics is another application that has gained significant attention. DNA profiling, also known as genetic fingerprinting, is used to identify individuals based on their unique genetic makeup. This technology has become a powerful tool in criminal investigations, helping to solve cases that were previously unsolvable. DNA evidence can link suspects to crime scenes, exonerate the wrongly accused, and identify remains in cases of missing persons or mass disasters.
Genetics also provides insights into the evolution of life on Earth. By comparing the genomes of different species, scientists can trace evolutionary relationships and reconstruct the history of life. This comparative genomics approach has revealed the genetic basis of many traits and adaptations, offering a deeper understanding of the diversity of life. For instance, studying the genetic similarities and differences between humans and our closest relatives, the great apes, has provided valuable insights into human evolution and the genetic underpinnings of traits that make us uniquely human.
Genetics is not just about understanding our individual makeup; it also provides insights into the broader picture of life on Earth. By studying the genetic diversity within and between populations, scientists can uncover patterns of migration, adaptation, and speciation. This knowledge is essential for understanding biodiversity and the delicate balance of ecosystems, informing conservation efforts and strategies to protect endangered species.
Genetics is a dynamic, ever-evolving field with immense potential for improving human health, agriculture, and our understanding of the living world. As we continue to unravel the secrets hidden within our genes, we gain a deeper appreciation for the intricate dance between heredity and environment that shapes the tapestry of life. From Mendelian inheritance to the cutting-edge tools of genetic engineering, genetics offers a glimpse into the fascinating instruction manual of life, one letter at a time. As we navigate the promises and challenges of genetic technologies, it is crucial to approach these advancements with a sense of responsibility and ethical consideration, ensuring that the benefits are maximized while minimizing potential risks. The future of genetics holds exciting possibilities, and with thoughtful stewardship, it can lead to a deeper understanding and betterment of our world.
Features
Politics of Enforced Disappearances in Sri Lanka

In 2016, I participated in research focused on gathering information about reconciliation mechanisms in post-war Sri Lanka. During one of the interviews, a Tamil mother, from the Eastern part of the country, broke into tears as she shared her story. Her son had disappeared, and, according to some of the neighbours, he was apparently abducted by a paramilitary group. Her story goes as follows: After hearing the news, she began searching for her son and went to the police station to file a case. However, police refused to file the case and directed her to a military camp. In the military camp, she was directed to an officer, who took her to a room with scattered flesh and blood stains. Then the officer, pointing to the room has told the lady that, ‘This is your son’.
In another instance, in the same year, while we were working in Kurunegala, an elderly mother, wearing a white saree, approached us and shared her story. She held a stained envelope, and when she carefully took out a piece of paper, related to her son, she broke into tears. She handled the paper with such tenderness, as though it were a part of her son himself. Her son was abducted by a para military group in 1989 and never returned.
These two stories have remained deeply etched in my mind for several years, leaving a lasting impact. Now, with the release of the Batalanda Commission Report, which sheds light on the atrocities committed during a dark chapter of Sri Lanka’s history, coupled with the release of the movie ‘Rani’, there is renewed attention on enforced disappearances. These disappearances, which were once shrouded in silence and denial, are now gaining significant traction among the public. Thus, it is timely to discuss the stories of enforced disappearances and the political dynamics surrounding them.
The Effect
Enforced disappearance is often employed as a strategy of terror, deliberately designed to instil fear and insecurity within a society. The tactic goes beyond the direct impact on the immediate family members of the disappeared individuals. The psychological and emotional toll on these families is profound, as they are left with uncertainty, grief, and often a sense of helplessness. However, the effects of enforced disappearance extend far beyond these immediate circles. It creates a pervasive atmosphere of fear that affects entire communities, undermining trust and cohesion. The mere threat of disappearance looms over the population, causing widespread anxiety and eroding the sense of safety that is essential for the social fabric to thrive. The fear it engenders forces people into silence, discourages activism, and ultimately weakens the collective spirit of resistance against injustice.
Absence of the body
For years, the families and loved ones of the disappeared hold on to a fragile hope, clinging to the belief that their loved ones may still be alive. The absence of a physical body leaves room for uncertainty and unresolved grief, creating a painful paradox where the possibility of closure remains out of reach. Without the tangible proof of death—such as a body to bury or mourn over—the search continues, driven by the hope that one day they will find answers. This absence extends beyond just the physical body; it symbolizes the void left in the lives of the families, as they are left in a perpetual state of waiting, unable to fully mourn or heal. The constant uncertainty fuels a never-ending cycle of searching, questioning, and longing.
Making a spectacle of unidentified bodies
In 1989, as a small child, I found myself surrounded by an atmosphere that was both suffocating and frightening, filled with sights and sounds that I couldn’t fully comprehend at the time, but that would forever leave a mark on my memory. I can still vividly recall the smell of burning rubber that hung thick in the air, mixing with the acrid scent of smoke that lingered long after the flames had died down. The piles of tyres, set ablaze, were a regular feature of the streets where I lived. Yet, it wasn’t just the sight of the burning tyres that etched itself into my consciousness. As the flames raged on, the shadows of bodies emerged—neither completely visible nor entirely hidden.
Though my parents tried their best to shield me from the horror outside our home, I would sneak a peek whenever I thought no one was watching, desperate to understand the meaning behind what was unfolding before me. It was as though I knew something important was happening—something I couldn’t yet comprehend but could feel in the very air I breathed. I understood that the flames, the smoke, and the bodies all signified something far greater than I could put into words.
The burning piles of tyres—and, of course, bodies—which people spoke of in hushed tones, served as a chilling spectacle, conveying the threatening message the government sent to the public, especially targeting the young rebels and anyone who dared to challenge the state
Unable to seek justice
The absence of the body makes justice seem like a distant, unreachable concept. In cases of disappearance, where no physical evidence of the victim’s fate exists, the path to justice is often blocked. Without the body, there is no concrete proof of the crime, no tangible evidence that can be presented in court, and no clear sign that a crime was even committed. This leaves families and loved ones of the disappeared in a state of uncertainty, with no clear answers about what happened to their dear ones. As a result, families are forced to live in a limbo, where their grief is ignored and their calls for justice are silenced.
Undemocratic actions under a Democratic Government
Governments are meant to serve and protect the people who elect them, not to subject them to violence, fear, or oppression. Irrespective of the situation, no government, under any circumstances, has the right to make its citizens disappear. A government is a democratically elected body that holds its power and authority through the consent of the governed, with the explicit responsibility to safeguard the rights, freedoms, and lives of its citizens. When a government starts to take actions that involve the arbitrary killing or disappearance of its own people, it betrays the very principles it was founded upon.
The act of making people disappear and killing represents a fundamental breach of human rights and the rule of law. These are not actions that belong to a legitimate government that is accountable to its people. Instead, they signal a state that has become corrupt and tyrannical, where those in power are no longer bound by any ethical or legal standards. When the government becomes the perpetrator of violence against its own citizens, it destroys the trust between the state and the people, undermining the core foundation of democracy.
In such a scenario, the authority of law collapses. Courts become powerless, and law enforcement agencies are either complicit in the wrongdoing or rendered ineffective. This breakdown in legal authority does not just mean a failure to protect the rights of individuals; it signals the descent of society into anarchy. When the government wields power in such a violent and oppressive way, it erodes the social contract. When this relationship is violated through actions like disappearances, those in power essentially declare that they are above the law, which leads to a breakdown of social order. It no longer becomes a state that works for its people but rather a regime that rules through fear, repression, and violence.
by Dr. Anushka Kahandagamage
Features
Hazard warning lights at Lotus Tower

Much has been written about the use of Hazard Warning Lights at Lotus Tower (LT)
Now it looks as if the authorities have got the day and night in a ‘twist’.
During the day time LT is in darkness. What should be ‘on’ during the day are the High Intensity Strobe Lights. It is observed that the authorities switch them ‘on’ in the night instead!
According to the ICAO recommendations what should be ‘on’ in the night are the low intensity strobe lights. High intensity in the night as is now, can momentarily blind the pilots.
At this time of the year the island experiences afternoon thunder showers which make the LT and the natural horizon invisible. (See picture) in a phenomenon known as ‘white out’ caused by fog (low cloud), mist and rain. However, the LT is kept dark and not lit up and that could be dangerous to air traffic.
In short what is needed are white strobe lights 24/7 (day and night). High Intensity by day and Low Intensity at night. They are known as ‘attention getters’.
The red lights must be ‘on’ at sunset and ‘off’ by sunrise (as correctly carried out currently).
I am aware that the Organisation of Professional Associations (OPA) has written to the LT authorities at the request of the Association of Airline Pilots, Sri Lanka, about three months ago but strangely the OPA has not even received an acknowledgement!
GUWAN SEEYA
Features
Ninth Iftar celebration organised by Police Buddhist and Religious Affairs Association, Wellawatte

Islam is a peaceful religion that guides people to fulfil the five pillars of Islam, namely, Kalima, Prayer, Sakkath, Fasting and Hajj and through them to attain the grace of God.
The fact that the Holy Quran, the sacred book of Muslims, was revealed on one of the odd nights of the month of Ramadan, makes people realize the special importance of the month of Ramadan.
Fasting, the Holy Quran states, “0 you who believe, fasting is prescribed for you as it was prescribed for those before you, that you may become pure.” (2.183)
Muslims observe the first fast in the early hours of the evening when the first crescent of the month of Ramadan is sighted. The special feature of Ramadan fasting is to wake up early in the morning, eat before the sunrise (Sahur) and then fast for 14 hours until the evening prayer (Mahrib), remember the Creator and worship Him five times a day, break the fast at the time of Iftar (Mahrib), eat food with dates and spend the 30 days of Ramadan.
Ramadan fasting increases fear and faith in Allah, and it is not equal for the wealthy to live luxuriously without realizing the poverty of the poor and the poor to die of poverty. Therefore, fasting has been emphasized as the fourth Pillar in Islam to make the rich aware of the nature of poverty and to make the rich aware of the nature of hunger and to give charity.
Ramadan fasting is a shield for Muslims. The main objectives of fasting are the virtues, characteristics, morality and spiritual attraction of a person.
When approaching fasting from a medical perspective, it is said that ‘a disease-free life is an inexhaustible wealth’, so the good deed of fasting provides great benefits to the body.
Generally, it is a universal law to give rest to all the machines that have power. That is, it allows the machines to continue to function well. Similarly, it is necessary to give rest to our bodies. The fasting of the month of Ramadan explains this very simply.
“Historically, fasting has been proven to be very safe for most people,” says Babar Basir, a cardiologist at Henry Ford Health in Detroit, USA. “Ramadan fasting is a form of intermittent fasting that can help you lose fat without losing muscle, improve insulin levels, burn fat, and increase human growth hormone,” he says.
All wealthy. Muslims are required to give 2’/2 percent of their annual income to the poor in charity. This is why Muslims give more charity in the form of money, food, and clothing during Ramadan.
Anas (Kali) reported that the Prophet (Sal) said, “The best charity is to feed a hungry person.” This shows how great an act it is to feed a hungry person.
Fasting during the holy month of Ramadan, one of the most sacred duties of Muslims, is Providing facilities for fasting and breaking it is also a pious act that brings benefits. In that way, the Sri Lanka Police, as a way of receiving the blessings of Allah, have organized the Police Iftar ceremony to break the fast for the fasting people.
The Police Iftar ceremony, which is organized annually by the Sri Lanka Police Buddhist and Religious Affairs Association for Muslim police officers serving in the Sri Lanka Police, will be held for the 9th time this year on the 24th at the invitation of the Acting Inspector General of Police Mr. Priyantha Weerasooriya and will be held at the Marine Grand Reception Hall in Wellawatte under the participation of the Hon. Minister of Public Security and Parliamentary Affairs Mr. K.M. Ananda Wijepala. Muslim members of Parliament, Foreign Ambassadors of Islamic countries, High-ranking Police officers and Muslim Police officers, as well as members of the public, are also expected to attend the Iftar ceremony.
a.f. fUARD
Chief Inspector of Police
International Affairs
Criminal Investigation Department
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