Chromosomes
⭐ MasteredChromosomes are long threads of DNA packed tightly inside the nucleus of a cell. Humans usually have 46 chromosomes arranged in 23 pairs.
If you stretched out all the DNA in one of your cells, it would be about two metres long.
All about Chromosomes
Chromosomes are long, tightly coiled threads of DNA inside the nucleus of a cell. They carry the genes that instruct the cell how to grow and function.
Most human cells contain 46 chromosomes arranged in 23 pairs, with one set inherited from each parent.
Chromosomes carry the genes that decide features like eye colour, height and many other characteristics.
One chromosome in each pair comes from your mother and the other from your father. When a cell divides, the chromosomes are copied so that each new cell gets a complete set.
🎮 Try it yourself!
Loading…
Real-life uses of Chromosomes
- Understanding inherited traits
- Testing for some genetic conditions
- Studying how living things are related
Frequently asked questions about Chromosomes
How many chromosomes do humans have?
Most human cells have 46 chromosomes, in 23 pairs.
Where are chromosomes found?
They are found inside the nucleus of cells.