Genetics

2. A study of how characteristics are passed from one generation to another.
5. The number of chromosomes found in every human body cell, except gametes.
9. Thread-like structures found in the nucleus of an animal or plant cell.
10. A short section of the DNA in a chromosome of which there are approximately 20,500 in the human body.
12. A characteristic passed from parents to their children by genes.
13. Another way to describe characteristics.
14. A scientist who carried out a study in the mid-nineteenth century that forms the basis of the study of genetics.
15. A shortened version of deoxyribonucleic acid.

1. A trait which wins out over a recessive one is said to be this. (Dark hair/brown eyes)
3. An inherited characteristic.
4. In 1953 these two men showed that DNA was shaped like a spiral staircase, commonly known as the double helix.
6. The number of chromosomes found in a male gamete (sperm) and also the number of chromosomes found in a female gamete (egg).
7. A non-inherited characteristic.
8. The non-dominant gene is called this. (red hair/blue eyes.
11. A characteristic not inherited from our parents. They are learned throughout our life.