Flashcards
Level 1 Biology Flashcards (SET THREE)
Cards in this deck (15)
- 1NucleusiCell part that contains chromosomes
- 2Deoxyribonucleic AcidDNA
Substance carrying organism's genetic information - 3ChromosomeThreadlike structure of DNA and prtein found in the nucleus of cells - carries the genetic information in the form of cells
- 4Homologous ChromosomesHaving the same structural features (length) and pattern of genes
- 5KaryotypePhotograph of an individuals chromosomes cut out and arranged according to their size
- 6GeneShort length of DNA that carries the genetic code for a particular trait/characteristic or cell activity
- 7BaseParts of DNA involved in pairing - cytosine, guanine, adenine and thymine
- 8NucleotideForms the basic structural unit of DNA, composed of a sugar molecule, a phosphate group and a base
- 9DNACarries instructions to the next generation and determines the phenotype
- 10TraitA genetically determined characteristic
- 11VariationDifferences between organisms within a population - can be continuous or discontinuous
- 12MitosisCell division in the body cells for growth and repair - produces 2 new cells genetically identical to each other and to the parent
- 13MeiosisCell division in the testes and ovaries producing 4 new cells (gametes) - genetically different to each other, and to the parent cell
- 14GameteReproductive cells that contain half the number of chromosomes compared to the parent cell
- 15ZygoteA fertilised ovum/egg that contains the full set of chromosomes
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- Terms and definitions for the end of year exam
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- Eleanor James
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