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| Question | Answer |
| Definition of Genetics: | Study of inheritance; the way in which genetics information is transferred from one generation to the next. |
| DNA | deoxyribonucleic acid |
| Where is DNA found? | Chromosomes within the nucleus of the cell. |
| Chromosomes are made up of... | DNA |
| Structure of DNA: | Double helix (twisted ladder) |
| What is the structure of DNA composed of?: | sugar, phosphate, bases |
| sugar+phosphate+base=..? | nucleotide |
| Bases (A,T,G,C) A.T.Gatland's.Class | Adenine, Guanine, Cyotosine, Thymine |
| Definition of Gene | GENES: Section of DNA that holds the code for one specific characteristics/trait. Located at specific sites (locus) of chromosome; e.g: hair colour, ability to tongue roll, eye colour etc. |
| Definition of Alleles | ALLELES: Alternative forms of a gene. Codes for same characteristics/traits e.g: eye colour but have slight different order of bases which cause different traits thus cause variation. e.g: CHARACTERISTICS: Eye colour, ALLELES: B,b, E.G OF TRAITS CAUSED BY DIFF ALLELES: brown eyes, blue eyes |
| Genotype | Combination of alleles present (can't see) e.g: one allele for brown eyes, one alleles for blue eyes |
| Phenotype | The trait/characteristics that is actually seen |
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