Variations Poster

By: Miranda Blankenship

Independent Assortment

The random assortment of homologous chromosomes that occurs during meiosis.


Picture Source: http://geneticssuite.net/files/Independent%20assortment.jpg

Crossing Over

The exchange of genetic material that occurs between homologous chromosomes during the beginning of meiosis.


Picture Source: http://cnx.org/resources/59930d591d01ff9248d628195be278bb/Figure_07_02_01.jpg

Fertilization

The joining of egg and sperm (both haploid) to produce a diploid zygote.


Picture Source: http://www.lsic.ucla.edu/classes/lifesci/central/ps107/lectures/images/emb04-fertilization.jpg

Mutations

An alteration in which homologous chromosomes fail to separate normally during meiosis.


Picture Source: http://anthro.palomar.edu/synthetic/images/mutation.gif

Nondisjunction

A change in the order of nitrogen bases in a cell’s DNA that results in different genetic sequences.


Picture Source: http://www.biology.iupui.edu/biocourses/N100/images/11nondisjunction.gif