MIT BLOSSOMS INITIATIVE “Genetic Basis of Inheritance and Variation” Dr. Amjad Mahasneh JUST.

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MIT BLOSSOMS INITIATIVE “Genetic Basis of Inheritance and Variation” Dr. Amjad Mahasneh JUST

Photo # 2 Photo # 3Photo # 4 Photo # 1

Metaphase IProphase IAnaphase I Telophase I and Cytokinesis Centrosome (with centriole pair) Sister chromatids Chiasmata Spindle Homologous chromosomes Fragments of nuclear envelope Centromere (with kinetochore) Metaphase plate Microtubule attached to kinetochore Sister chromatids remain attached Homologous chromosomes separate Cleavage furrow

Allele for Tall Homologous pair of chromosomes Locus for Height gene Allele for short

Prophase I of meiosis Pair of homologs Nonsister chromatids held together during synapsis Chiasma Centromere Anaphase I Anaphase II Daughter cells Recombinant chromosomes TEM

Possibility 1 Possibility 2 Two equally probable arrangements of chromosomes at metaphase I Metaphase II Daughter cells Combination 1Combination 2Combination 3Combination 4

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