Speciation & Evolution Keywords 0.0 / 5 ? BiologyWalk on the wild sideA2/A-levelEdexcel Created by: ew12342Created on: 21-04-16 13:19 Proteome All the proteins produced from the DNA. 1 of 19 Genome All the DNA of an individual. 2 of 19 Allele frequency Frequency of a particular allele in a population. 3 of 19 Gene pool Range of alleles in a population. 4 of 19 Mutation A change in the base sequence of DNA. 5 of 19 Genotype Genetics of an individual. 6 of 19 Phenotype Physical characteristics of the expression of the genotype. 7 of 19 Prezygotic When fertilisation is prevented. 8 of 19 Postzygotic When the zygote fails or is unable to breed. 9 of 19 Species A group of closely related organisms that can interbreed to produce fertile offspring. 10 of 19 Speciation The development of a new species. 11 of 19 Selection pressure A factor limiting the survival of an organism or species. 12 of 19 Reproductive isolation A barrier that prevents interbreeding between organisms. 13 of 19 Gene flow The transfer of alleles or genes from one population to another. 14 of 19 Natural selection "Survival of the fittest". 15 of 19 Variation Differences between individuals or alleles. 16 of 19 Hybrid When two different species interbreed. 17 of 19 Allopatric speciation A geographical barrier between two populations developing into a new species. 18 of 19 Sympatric speciation A barrier that is not geographical that forms the development of a new species e.g. mechanical, behavioural or temporal. 19 of 19
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