Flashcards
Genetics
Cards in this deck (12)
- 1Definition of Genetics:Study of inheritance; the way in which genetics information is transferred from one generation to the next.
- 2DNAdeoxyribonucleic acid
- 3Where is DNA found?Chromosomes within the nucleus of the cell.
- 4Chromosomes are made up of...DNA
- 5Structure of DNA:Double helix (twisted ladder)
- 6What is the structure of DNA composed of?:sugar, phosphate, bases
- 7sugar+phosphate+base=..?nucleotide
- 8Bases (A,T,G,C) A.T.Gatland's.ClassAdenine, Guanine, Cyotosine, Thymine
- 9Definition of GeneGENES: 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. - 10Definition of AllelesALLELES: 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 - 11GenotypeCombination of alleles present (can't see)
e.g: one allele for brown eyes, one alleles for blue eyes - 12PhenotypeThe trait/characteristics that is actually seen