Scoolam Foundation

Genes provide the biological instructions that influence traits such as height, metabolism, behavior, and disease risk.
Environment, including nutrition, lifestyle, stress, education, and exposure to toxins, can shape how these genetic instructions are expressed.
Together, genes and environment interact to influence development, health, personality, and the unique differences seen in every individual.

The large intestine is the final part of the digestive system, where water and electrolytes are absorbed from undigested food.
It contains the cecum, colon, re**um, and a**l ca**l, helping form, store, and eliminate f***s from the body.
Beneficial gut bacteria in the large intestine also support digestion, vitamin production, and overall gut health.

The Meselson and Stahl experiment proved that DNA replication follows the semi-conservative model, where each new DNA molecule contains one original strand and one newly synthesized strand.
Using nitrogen isotopes, N¹⁵ and N¹⁴, they showed how bacterial DNA changed density after each round of replication.
This classic experiment became one of the strongest pieces of evidence explaining how genetic information is accurately copied during cell division.

Chromosomal disorders occur when there is a change in the number or structure of chromosomes, affecting normal growth and development.
Examples include Down syndrome, Turner syndrome, Klinefelter syndrome, and conditions caused by deletions, duplications, or translocations.
Understanding chromosomal disorders helps explain how genetic changes can influence physical traits, development, fertility, and overall health.

The cerebrum is the largest part of the brain and controls thinking, memory, emotions, voluntary movement, and sensory processing.
Its two hemispheres work with specialized lobes to help us see, hear, speak, learn, plan, and make decisions.
As the center of higher brain functions, the cerebrum plays a major role in intelligence, personality, consciousness, and daily behavior.

The liver is one of the body’s most vital organs, responsible for detoxification, bile production, nutrient processing, and energy storage.
It helps regulate blood sugar, breaks down harmful substances, stores vitamins and minerals, and supports digestion through bile secretion.
From metabolism to immune defense, the liver works continuously to keep the body balanced, protected, and healthy.

The esophagus is a muscular tube that carries food and liquids from the pharynx to the stomach through coordinated wave-like contractions called peristalsis.
Its upper and lower esophageal sphincters help regulate swallowing and prevent the backflow of stomach contents.
As a key part of the digestive system, the esophagus ensures safe and efficient transport of food from the mouth to the stomach.

Stem cell culture is a laboratory technique used to grow and maintain stem cells under controlled conditions while preserving their ability to self-renew and differentiate.
It helps scientists study early development, disease mechanisms, tissue repair, drug testing, and regenerative medicine.
Because stem cells can develop into specialized cell types, stem cell culture is one of the most important tools in modern biomedical research.

Totipotency is the ability of a single cell to develop into an entire organism, including all specialized tissues and extraembryonic structures.
In plants, totipotent cells are the foundation of plant tissue culture, allowing scientists to regenerate whole plants from small tissue samples.
This powerful biological property helps in crop improvement, cloning, conservation, and modern biotechnology research.