Lecture 4/3

• What type of cell does Meiosis start with?

  Diploid cell
• A gamete needs to harbor a single allele of every gene in the organisms genome

  True
• What happens during Prophase 1 in Meiosis?

  Homologous chromosomes come together to form tetrads and stay like this into Metaphase
• What is Independent Assortment?

  When homologous replicated chromosomes part from each other and move to one or the other opposite poles, but do not split centromeres

  
• What are the end results of Meiosis I?

  2 gamete precursor cells that each have 23 replicated chromosomes.
• What is the object of Meiosis II?

  To divide the precursor cells from Meioisis I, into daughter cells which each have 23 unreplicated chromosomes.
• When can crossing over of genes happen?

  Prophase I
• what is gene cross over?


  Paternal and maternal chromatid can trade sections with each other.
• What did Genetics provide?

  A way to use visible characteristics of an organism to study that organism unseen hereditary material.
• What was Mendel's result of his first experiment(pure breeding round pea vs. pure breeding wrinkle pea)?


  All round peas in the first generation.
• What hypothesis did Mendel's work reject?

  Hereditary material mixing like paint colors.
• What did Mendel suggest about genes(dominant v recessive)?

  "Particles" can be recessive or dominant
• What is Mendel's Law of Segregation?

  The two particles of a pair always separate during gamete production. For a given gamete, there is a 50% chance one particle will be placed in it, and a 50% chance the other particle will.