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Genetics
Junior Cert Science
| Question | Answer |
|---|---|
| What do you call the study of the inheritance of characetesitics | Genetics |
| Name some inherited physical characteristics | Eye colour, hair colour, free ear lobes |
| What is the name given to thread like structures found in the nucleus of as cell | Chromosomes |
| What are chromosomes made from | Protein and DNA |
| How many chromosomes are present in each sex cell, egg and sperm | 23 |
| What do you call the chemicals present on chromosomes that carry the genetic information | Genes |
| How many chromosomes present in all cells except sex cells | 46 |
| What is the name given to a gene that appears in a child when two different genes are controlling a characteristic | Dominant gene |
| What is the name given to the gene that does NOT appear in a child when two different genes are controlling a characteristic | Recessive gene |
| Capital letters are used to represent what type of gene | Dominant |
| Small letters are used to represent what type of gene | Recessive |
| Name some non inherited characteristics | Riding a bike, drive car, speak Irish |