BIOLOGY REVISION CARDS 0.0 / 5 ? BiologyDNA and inheritanceGCSEAQA Created by: [email protected]Created on: 31-10-17 21:19 whats mitosis? Forms body cells, growth and replacement, genetically identicle and 2 daughter cells 1 of 17 What's a diploid Any cells with pairs of chromosomes 2 of 17 Definition of miosis Forms gamets, all daughter cells are genetically different 3 of 17 Definition of a haploid Any cell with single chromosomes 4 of 17 How many chromomes on a human genome? 24 (24th gender cell, 23 on gamets) 5 of 17 Definition of allle A version of a particular gene 6 of 17 Definition of homozygous An individual with two identicle allels for a characterstic 7 of 17 Definition of hetrozgous An individual with different allels for a characteristic 8 of 17 Definition of recessive The characteristic that will show up in the offspring even if only one allele is inherited 9 of 17 Definition of genotype This describes the genetic makeup of an individual regarding particular characteristics 10 of 17 Phenotypes The physical apperance of an individual regarding particular characteristics 11 of 17 Carrier Individual that is hetrozygous 12 of 17 mutation change in the genetic material of an organism 13 of 17 Selective breeding Speeds up natural selection by selecting animals or plants for breeding that have a required characteristic. 14 of 17 Perineralised fossils When orgainisms hard tissue is buried in soil and over time minerals build up in the hard tissue 15 of 17 Ice fossils Factors such as ice stop the decaying process, and preserve both hard and soft tissue 16 of 17 Imprint fossils Footprints or imprints of organisms , sticks in a substance e.g.into a substance which preserves it over time 17 of 17
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