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Mendelian Genetics

Chromosomes Condense, Homologous chromosome's pair up and crossing over occurs Prophase I
Spindle Forbes attach to chromosomes and centromeres and chromosomes line up on the equator Metaphase I/II
Chromosomes start to move to opposite poles of the cell as spindle fibres contract Anaphase I
Chromosomes reach the poles and the nuclear membrane reforms Telophase I
Chromosomes condense and spindle fibres reform (no crossing over) Prophase II
Centromeres divide and sister chromatids move to the poles as spindle fibre contracts Anaphase II
chromatids (chromosomes) reach the poles and nuclear membrane reforms Telophase II
What is mendels law of segregation? Characteristics are determined by factors, and only one of each factor can be passed down by a parent
What is mendels law of independent assortment? Inheritance of one trait, does not affect the inheritance of another trait
What are the 3 origins of variation Independent assortment, crossing over and random fertilisation
Where doe independent assortment occur? Metaphase I
Where does crossing over occur? Prophase I
Created by: Jake_Bark