Please enable JavaScript.

Coggle requires JavaScript to display documents.

Patterns of Heredity - Coggle Diagram

- - - - A gene is a unit of heredity that occupies a specific location on a chromosome and codes for a particular product. Heredity is the passing of genes from parents to offspring.
  - - - He began investigating the inheritance of traits among the pea plants in the monastery's garden.
      - He worked with seven different traits: plant height, flower and pod position, seed shape, seed color, pod shape, pod color, and flower color. He studied each trait separately.
    - - Mendel realized that each plant must have two “factors” for each possible trait—one factor from each parent.
      - Later experiments allowed Mendel to draw a number of other conclusions about how these factors are distributed. Since the mid-1800s, Mendel's experiments and conclusions have been the basis for most of the scientific thought about heredity. Those things he called “factors” are what we now call genes and alleles.
- - - - During meiosis, a single cell goes through two cell divisions—meiosis I and meiosis II.
        
        Meiosis I
        
        there are four steps in meiosis I:
        
        Prophase I
        
        The duplicated chromosomes pair up with their partners.
        
        Metaphase I
        
        The chromosome pairs line up along the center of the cell.
        
        Anaphase I
        
        The two copies of one homolog are pulled apart from the two copies of the other homolog.
        
        Telophase I and Cytokinesis
        
        A new cell membrane forms at the center of the cell, dividing the parent cell into two daughter cells.
        
        Meiosis II
        
        During meiosis I, two daughter cells are formed.
        
        Both of these cells divide during meiosis II, to produce a total of four daughter cells.
        
        The four steps in meiosis II are :
        
        Prophase II
        
        In each daughter cell, there are two copies each of n chromosomes. The copies are attached together.
        
        Metaphase II
        
        Each duplicated chromosome lines up separately along each cell's center.
        
        Telophase II and Cytokinesis
        
        new cell membrane forms in the center of each cell, as each cell divides into two 1n daughter cells, producing a total of four 1n cells.
        
        Anaphase II
        
        The two attached copies of each chromosome separate and are pulled to opposite poles in each cell.
      - Meiosis takes place only in the reproductive tissues of an organism.