Key words. B2 5 0.0 / 5 ? BiologyScienceGCSEAQA Created by: BasitalCreated on: 05-01-17 20:56 Allele A version of a particular gene 1 of 18 Stem cell Undifferentiated cell with the potential to form a wide variety of different cell types 2 of 18 Differenciated Specialised for a particular function 3 of 18 Ova The female sex cells, eggs 4 of 18 Therapeutic cloning Cloning by transferring the nucleus of an adult cell to an empty egg to produce tissues or organs which could be used i edicine 5 of 18 DNA Deoxyribonucleic acid, the material of inheritance 6 of 18 DNA fingerprints Patterns produced by analysing the DNA which an be used to identify an individual 7 of 18 Sex chromosomes A chromosome which carries information about the sex of an individual 8 of 18 Dominant The characteristic that will show up in the offspring even if only one of the alleles is inherited 9 of 18 Recessive The characteristic that will show up in the offspring only if both of the alleles are inherited 10 of 18 Homozygous An individual with two identical alleles for a characteristic, e.g. DD, dd 11 of 18 Heterozygous An individual with different alleles for a characteristic, e.g. Dd 12 of 18 Genotype This describes the genetic makeup of an individual regarding a particular characteristic, e.g. Dd, dd 13 of 18 Phenotype This describes the physical appearance of an individual regarding a particular characteristic, e.g. dimples, no dimples 14 of 18 Genetic disorder Disease which is inherited 15 of 18 Polydactyly A genetic condition inherited through a dominant allele which results in an extra finger 16 of 18 Cystic Fibrosis A genetic disease that affects the lungs, digestive and reproductive systems. It is inherited through a recessive allele. 17 of 18 Huntington’s disorder A gentic disease inherited through a dominant allele which results in death of brain cells. 18 of 18
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