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Genetic Variation

Description

Overview of the NCEA level 2 genetic variation and change topic.
Deanna Louis
Mind Map by Deanna Louis, updated more than 1 year ago
Deanna Louis
Created by Deanna Louis over 7 years ago
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Resource summary

Genetic Variation
  1. Sources of Variation
    1. Mutations
      1. Meiosis
        1. Independent Assortment
          1. Crossing Over
            1. Segregation
            2. Sexual Reproduction
              1. 2 Parents
                1. Fertilisation
              2. Key Terms
                1. Gene
                  1. Allele
                    1. Trait
                      1. Gene Pool
                        1. Allele Frequency
                        2. Evolution
                          1. Natural Selection
                            1. Types
                              1. Disruptive
                                1. Directional
                                  1. Stabilising
                                  2. Darwin's Theory

                                    Annotations:

                                    • The favourable phenotype is selected for.
                                  3. Gene Flow

                                    Annotations:

                                    • Gene flow affects the gene pool of a population.
                                    1. Immigration

                                      Annotations:

                                      • Individuals entering the population.
                                      1. Emmigration

                                        Annotations:

                                        • Individuals leaving the population.
                                      2. Genetic Drift
                                        1. The Bottleneck Effect
                                          1. The Founder Effect
                                        2. Inheritance
                                          1. Monohybrid Inheritance
                                            1. Complete Dominance
                                              1. Incomplete Dominance
                                                1. Co-dominance
                                                  1. Lethal Alleles
                                                    1. Multiple Alleles
                                                    2. Dihybrid Inheritance
                                                      1. 9:3:3:1 - separate chromosomes
                                                        1. 9:1:1:5 - lethal alleles/crossig over
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