Patterns of Inheritance

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Mind Map on Patterns of Inheritance, created by julia guk on 10/11/2014.
julia guk
Mind Map by julia guk, updated more than 1 year ago
julia guk
Created by julia guk about 11 years ago
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Patterns of Inheritance
  1. Mendel's Laws
    1. The segregation of traits
      1. Random alignment of tetrads during metaphase I
      2. There is a gene that is carried on a chromosome and in a diploid chromosome there is another homologous chromosome that has essentially the same DNA with the same gene for the same trait, but they can have slight differences (at the same locus) that has different ALLELES.
      3. Deviations from Mendel's Laws
        1. Some traits not on nuclear chromosomes (e.g. mitochondrial or chloroplast chrosomes)
          1. Traits on the same chromosome
            1. Traits carried on sex-chromosomes (e.g mammals XX female, XY male)
            2. 1859 Charles Darwin
              1. Published "The Origin of Species"
              2. The Garden Pea
                1. True-breeding varities: a particular trait was consistently inherited from one generation to the next
                  1. Easy to grow
                    1. Easily distinguishable traits (flower color, round or wrinkled, pod color)
                      1. 2 types of fertilization
                        1. Cross mate- use a brush to put pollen on ovar of another plant
                          1. Self-fertilization: take pollen and fertilize ovar of same plant
                        2. Incomplete dominance
                          1. 1:2:1, 1 gene 2 variants
                          2. Lethal alleles: FF = dead, ratio is 2:1 not 3:1
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