Patterns of Inheritance

Descrição

AS level Biology (Module 6- Genetics and Ecosystems) Mapa Mental sobre Patterns of Inheritance, criado por 007842-Stuart Denton em 17-02-2017.
007842-Stuart Denton
Mapa Mental por 007842-Stuart Denton, atualizado more than 1 year ago
007842-Stuart Denton
Criado por 007842-Stuart Denton aproximadamente 7 anos atrás
12
1

Resumo de Recurso

Patterns of Inheritance
  1. Factors affecting phenotype
    1. Enviromental
      1. Scars
        1. Accents
        2. Genetic
          1. Persistent
            1. Transmitter through multiple generations without change
            2. Random
              1. Mutates on a gene the the organism doesn't use
            3. Sexual Reproduction
              1. Variation occurs in Meiosis
                1. Metaphase one
                  1. Chromatids cross over
                  2. Anaphase 1&2
              2. Chromosome Mutations
                1. Deletion
                  1. lost
                  2. Inversion
                    1. Turned around
                    2. Translocation
                      1. Breaks off, reconnects to another chromosome
                      2. Duplication
                        1. Non-disjunction
                          1. One pair fails to separate, extra chromosome
                          2. Aneuploidy
                            1. Chromosome number is not exact multiple for that organism
                            2. Polyploidy
                              1. Diploid fertilised by haploid = Triploid
                                1. Fusion of two diploid = Tetraploid zygote
                              2. Factors affecting Genotype
                                1. Biological
                                  1. Chemical
                                    1. Physical agents
                                    2. Dihybrid Cross
                                      1. Mendel
                                        1. Two genes are inherited independently
                                          1. During fertilisation any allele can bind with any other allele
                                            1. Simultaneous inheritance of two characteristics
                                            2. Co-dominance & Linkage
                                              1. Multiple alleles- more than two variations of the gene
                                                1. Can still only process two alleles, one for each gene locus
                                                2. Human blood groups, three allele for one gene
                                                  1. If you have 2 codominant alleles, the phenotype of a homozygous organism will be different from a heterozygous because both alleles contribute
                                                    1. Sex- linkage
                                                      1. Colourblindness and Haemophillia
                                                        1. Males mostly affect because lack of second X chromosome
                                                      2. Epistasis
                                                        1. Antagonistically
                                                          1. Complementary
                                                            1. Is the interaction of non-linked gene loci
                                                              1. Ignores the dom and recess nature
                                                            2. Stats
                                                              1. Chi-Squared
                                                                1. Hardy-Weinberg
                                                                2. Factors affecting genetic variation
                                                                  1. Population size
                                                                    1. Isolation
                                                                      1. Mutation rate
                                                                        1. Genetic drift
                                                                          1. Continious or discontinious variation
                                                                          2. Three types of selection:
                                                                            1. Stabalising
                                                                              1. Environment remains the same, leads to reduction in genetic variety
                                                                              2. Directional
                                                                                1. Environment changes, leads to shift in optimum value
                                                                                  1. Used by selective breeders
                                                                                    1. Can alternate with periods of stablising
                                                                                    2. Dsiruptive
                                                                                      1. Favours both extreme and intermediate traits

                                                                                    Semelhante

                                                                                    Biology AQA 3.1.3 Cells
                                                                                    evie.daines
                                                                                    Biology AQA 3.2.5 Mitosis
                                                                                    evie.daines
                                                                                    Biology AQA 3.1.3 Osmosis and Diffusion
                                                                                    evie.daines
                                                                                    Biology- Genes, Chromosomes and DNA
                                                                                    Laura Perry
                                                                                    Biology- Genes and Variation
                                                                                    Laura Perry
                                                                                    Enzymes and Respiration
                                                                                    I Turner
                                                                                    GCSE AQA Biology - Unit 2
                                                                                    James Jolliffe
                                                                                    GCSE AQA Biology 1 Quiz
                                                                                    Lilac Potato
                                                                                    Using GoConqr to study science
                                                                                    Sarah Egan
                                                                                    Cells and the Immune System
                                                                                    Eleanor H
                                                                                    GCSE Biology AQA
                                                                                    isabellabeaumont