Biology questions 0.0 / 5 ? BiologyMixA2/A-levelAQA Created by: Pheebzicles01Created on: 09-04-19 10:14 Why are males more likely to show a phenotype produced by a recessive allele carried on the x chromosome Males on need one allele as have no Y loci. Females need two of recessive allele to express same phenotype 1 of 13 Explain how it can be seen in genetic trees that a disease is recessive Parents don't have disease but daughter does. Parents are heterozygous and pass on allele. 2 of 13 Genetic factors which increase diversity Mutations, meiosis and random fertilisation 3 of 13 How does meiosis increase diversity Crossing over & Independent segregation 4 of 13 Types of selection Stabilising, directional, disruptive 5 of 13 Types of speciation Allopatric (different place) & Sympatric (same place) 6 of 13 Types of isolation Geographical (area), ecological (inhabits), behavioural (mating), temporal (seasons), mechanical (anatomy), 7 of 13 Population group of individuals of one species which inhabit the same place at the same time 8 of 13 Community All the populations of different species living and interacting in a particular place at the same time 9 of 13 Habitat Place where an organism normally lives and is characterised by the physical conditions and the other organisms that live there 10 of 13 Niche How an organism fits into the enivronment 11 of 13 Ecology Study of the inter relationship between organisms and their environment 12 of 13 Carrying capacity Support a certain size of population 13 of 13
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