It's a frequent misconception that identical twins share fingerprints. Each twin has a unique set of fingerprints that convey a different tale, despite the fact that they may appear remarkably alike and share a lot of DNA.

Are you wondering how identical twins might differ so much from one another in such a small way?

Let's look at the intriguing science that underlies it.

Twin Types: Not All Twins Are Created Equal

To understand why fingerprints differ, we must first look at the two main types of twins—identical and fraternal—and how they form.

Twins That Don’t Look Alike, or Non-Identical Twins

Fraternal twins are produced when two different sperm fertilize two different eggs. Since they share about half of their DNA, they are genetically identical to any other sibling. But, what are fraternal twins? They are also known as dizygotic twins. They come from two separate eggs, fertilized by two different sperm. They also share about 50% of their genetic material, and have unique physical traits, often different sexes at birth too.

Because of this genetic variability, fraternal twins, like non-twin siblings, can have different sexes or distinct hair and eye colors.

Twins That Are Identical

Identical twins, on the other hand, develop from a single fertilized egg that divides into two embryos. Their DNA is almost the same, but not exactly the same, thanks to this process. Also known as the monozygotic twins come from a single fertilized eggs that splits into two embryos. These twin share the same genetic material, which is what leads to their identical physical traits and the same sex at birth. However, there are slight differences that can emerge due to environmental factors during pregnancy, including the space in the womb.

According to a 2021 study referenced by Smithsonian Magazine, only 38 pairs of identical twins and two sets of triplets had completely identical genes. Because of their tight genetic ties, they have remarkable physical similarities, such as similar skin tones, eye colors, and hair colors. However, minor distinctions like height, weight, and fingerprints distinguish them.

Fingerprints: Not Just Genetic Information

Although fingerprint patterns are influenced by heredity, environmental variables within the womb provide a twist.

Experts in forensic science say there is almost little likelihood that identical twins' fingerprints will match. Although they may have similar overall characteristics, such ridges and loops, the specifics are different.

The following factors affect fingerprints:

• Access to nutrition during pregnancy
• The length of the umbilical cord influences blood flow.
• Growth rates of fingers
• Placement inside the womb
• Both DNA and these environmental influences shape fingerprints, which are fixed for life by the 13th to 19th week of foetal development.

Solving the Fingerprint Mysteries

According to some research, twins' fingerprints could seem similar at first glance, but a deeper look reveals variations in the pattern branches and ridge spacing.

According to the National Forensic Science Technology Centre, no two individuals—not even identical twins—have ever been found to have the same fingerprints.

It adds even more individuality because even your own fingers have different prints!

Parenting expert Bethany Braun-Silva in a conversation with ABC News says that 2025 was the banner year for gentle parenting, but the tide is shifting now. However, she notes, "parents are understanding now that emotional awareness and empathy is as important as setting firm boundaries and parental expectations." This is why 2026 is now becoming a year when there is a shift away from gentle parenting. She notes that gentle parenting actually stands for firm boundaries, however, "some people rode that 'gentle' train too seriously".

An article by Mother.ly notes that critics often argue that gentle parenting often blurs the line between kindness and permissiveness. It argues that this leaves parents at the risk of being seen as pushovers. In fact, new research shows that it is the Gen Z parents who are moving away form "gentle parenting".

What Is The New FAFO Parenting Style Gen Z Moms And Dad Are Switching Too?

Another Wall Street Journal piece notes that more and more parents are now embracing FAFO, which is short for F-Around and Find Out. What does it mean? The idea is that parents can ask and warn their children, but if the child breaks the rules, parents cannot stand in the line of repercussions. "Won’t bring your raincoat? Walk home in the downpour. Didn’t feel like having lasagna for dinner? Survive until breakfast. Left your toy on the floor again? Go find it in the trash under the lasagna you didn’t eat," notes the WSJ.

Parenting styles that emphasized minimal discipline have shaped child-rearing over the past few decades. Critics now argue that this approach has contributed to some of Gen Z’s struggles in adulthood. They point to surveys showing young adults grappling with workplace relationships and rising anxiety and depression, questioning whether constant parental intervention and a reluctance to say “no” played a role.

For parents who have spent years trying to balance emotional support without tipping into permissiveness, FAFO can feel refreshingly straightforward.

What Is Wrong With Gentle Parenting?

The argument is that gentle parenting puts a lot of pressure on parents, and promote unrealistic expectations. Emily Edlynn, a licensed clinical psychologist who specializes in pediatric health psychologist writes for Psychology Today, that gentle parenting "adds stress to parenting that we don’t need. Higher stress undoubtedly impacts our relationship with our child in a negative way, more so than having our authentic moments of being human".

She argues that it is okay for parents to show frustration with a child who has asked the same question for the seventeenth time because the child did not like the answer. She says that expressing is better than holding all the frustration in. In fact this shows a natural demonstration of feelings and teaches the child to be expressive too.

Gentle parenting discussions often blur the line between punishment and discipline. Decades of research show that behavioral tools are not inherently punitive and can be an effective part of discipline. Discipline is meant to teach, while punishment is not. It is possible to combine emotional connection with clear consequences.

A habit that all parents hate could improve children's mental health. What is this? A new study published in The Journal of Affective Disorders is challenging one of the most common weekend arguments between parents and teenagers. Letting teens sleep in on weekends, something many parents see as laziness or poor discipline, may actually protect their mental health and lower the risk of depression.

The research was conducted by scientists from the University of Oregon and the State University of New York Upstate Medical University. They analyzed data from more than 1,000 young people between the ages of 16 and 24. Participants reported their usual sleep and wake times during the week and on weekends, including how much extra sleep they got by sleeping in on non-school days.

What Did The Study Find?

The findings were striking. Teens and young adults who allowed themselves to catch up on sleep over the weekend were significantly less likely to report symptoms of depression. In fact, those who slept in had a 41 per cent lower risk of depression compared to peers who stuck to the same early wake-up routine even on weekends.

This may sound counterintuitive to parents who believe that waking up early every day builds discipline and mental toughness. But researchers say adolescent biology tells a very different story. During puberty, the body’s internal clock shifts, making teens naturally inclined to fall asleep later at night and wake up later in the morning.

“Instead of being a morning lark, you’re going to become more of a night owl,” Melynda Casement, associate professor at the University of Oregon and co-author of the study, explained in a conversation with ScienceDaily. She added that this shift toward later bedtimes often lasts until around the ages of 18 to 20 before gradually stabilizing.

Why Does This Problem Arise?

The problem is that school schedules and daily responsibilities do not adapt to this biological change. Early school start times, homework, coaching classes, extracurricular activities, social commitments and even part-time jobs mean many teens are forced to wake up before their bodies are ready. Over time, this leads to what experts call “sleep debt”.

Casement points out that teenagers ideally need eight to ten hours of sleep each night, but most fail to get enough during the week. This chronic sleep deprivation has been closely linked to low mood, emotional regulation issues and a higher risk of depression. Weekend sleep, she says, can help offset some of that damage.

“It’s normal for teens to be night owls,” Casement notes. Allowing them to catch up on sleep over the weekend, especially when weekday schedules make adequate rest impossible, may offer meaningful mental health protection.

The study adds to a growing body of evidence supporting this idea. A 2025 meta-analysis of 10 studies found that weekend catch-up sleep was associated with a 20 per cent lower risk of depression. Taken together, the research suggests that sleeping in is not simply teenage rebellion or laziness, but a coping mechanism for an exhausting weekly routine.

At a time when concerns about adolescent mental health are rising globally, those extra hours of weekend sleep may be doing more good than parents realize. Sometimes, letting your teen sleep in might be one battle worth losing.

Not too long ago, in 2000, 1.6 million girls were missing from the number given at the natural sex ratio at birth, 26 years later, the number is at 200,000, and it is still falling. What has changed? The Economist reported that more and more parents are now preferring girl child over boys.

Earlier, parents were desperate for a boy, or did not just want a large family. In fact, in China, people would routinely terminate females. The practice of aborting girls is now becoming less common. The natural ratio is about 105 boy babies for every 100 girls. This is also because boys are more likely to die young, which could lead to rough parity at reproductive age. Sex ratio at birth has become more even across Asia. In 2006, China reported the peak of 117.8 boys per 100 girls, which went down to 109.8 in 2025. India too fell from 109.6 in 2010 to 106.8. In South Korea, in 1990, it was 115.7, which has now come back to normal.

Why Is There A Shift In Baby Preference?

There was a sexist tradition that believed that men mattered more. This came from the expectation that daughters will grow up and serve her husband's family. This is why parents preferred baby boys who would look after them in old age. Another idea is of dowry, to marry off a woman, the parents needed to have a stronger financial and economic backing, so the dowry could be paid at the time of her marriage. This is why many families did not want girl child. While these sexist ideas have not completely vanished, there are evidences that they are slowly fading away.

Secondly, this selective abortion has become a weapon against men, as it has led to lifelong bachelorhood. In China, they are known as "bare branches", and they were the ones who resented it intensely. Their anger also had wider social consequences. Large numbers of young, unmarried men are more likely to fuel instability and violence. Studies across several Asian countries have linked distorted sex ratios to higher rates of rape, violent crime in China, stricter policing to control unrest, and even greater risks of civil conflict or war elsewhere.

In India, especially in Haryana, bride buying, a controversial practice was found as a substitute for the lack of girls to marry the sons. These brides were purchased from backward economic background, which often led to exploitation.

As son preference declines, many societies are becoming safer.

At the same time, a subtle shift toward preferring daughters is emerging in some regions. This trend is far less extreme: parents are not eliminating boys, nor does any major country show a surplus of girls. Instead, the preference appears in attitudes and behavior. In Japan, couples wanting just one child tend to favour girls. Globally, parents often want both sexes, but in the US and Scandinavia, couples with sons are more likely to have additional children, suggesting a desire for daughters. Adoption data show families willing to pay more for girls, and where sex selection through IVF is legal, more women are choosing female embryos.

What Makes Parents Prefer Girl Child?

People are preferring girls for all sorts of reasons, which are:

• Some thing they are easier to bring up
• Some cherish what they see as "feminine" traits
• Some think that daughters are better at looking after elderly parents

The emerging preference for daughters also mirrors growing anxiety about how boys are faring. Boys have long been more likely to run into trouble, globally, 93% of the prison population is male. In many countries, they are also falling behind girls in education. In wealthier nations, 54% of young women hold a tertiary degree, compared with 41% of young men. While men remain overrepresented at the very top, in boardrooms, they are also increasingly overrepresented at the bottom, disengaged, isolated, and angry.

These trends have put boys’ struggles on governments’ radar. Because boys tend to mature later, some experts argue for starting them a year later in school. Others suggest more male teachers, especially in primary education, where they are scarce, to provide role models. Stronger vocational training could also steer boys toward careers traditionally avoided by men, such as nursing. Supporting struggling boys does not mean disadvantaging girls, just as giving glasses to someone with poor eyesight does not harm those with perfect vision.

Looking ahead, technology will give parents more choices. Some will be widely accepted, such as editing genes to prevent severe inherited diseases. But expanding access to sex-selection technologies raises harder questions. Couples undergoing fertility treatment can already choose sperm or embryos by sex, and as these methods become cheaper, their use may spread. Even more concerning, early blood tests can reveal an embryo’s sex within weeks, potentially enabling sex-selective abortions through medication, even among parents who conceive naturally.