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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 |