Each student is going to make a series of drawings (to be quizzed next Wednesday).

While this is a graphic exercise you should be talking to yourself and using the following required IB terms (see below):

Vocabulary: 

homologous chromosome, centromere, chromatid, sister chromatid, locus, allele, gene, diploid, haploid,

Instructions:

1. In your drawing, you should begin with 3 hologous pairs; 3 pairs of chromosomes. [We will assume your fictitious organism is diploid with 6 chromosomes.]
   1. Homologous chromosomes should be colored with ink or colored pencil in similar colors (for example, one pair may have one light blue chromosome & one dark blue chromosome, or pink & red etc.)  Note that this is NOT the way your textbook does it; DON'T copy the book's coloring or you will fail this assignment.
2. Draw mitosis on one side of one page of A4 paper, including:
   1. prophase, metaphase, anaphase and telophase
   2. in this diagram the emphasis is on chromosome, but include nuclear membrane and spindle fibers too
3. Draw meiosis I on one side of one page of A4 paper, including:
   1. prophase I, metaphase I, anaphase I, telophase I
   2. include 6 chromosomes, nuclear membrane, and spindle fibers
4. Draw meiosis II on one side of one page of A4 paper, including:
   1. prophase II, metaphase II, anaphase II, telophase II
   2. include 6 chromosomes, nuclear membrane, and spindle fibers
5. Every diagram should include:
   1. phase name like "prophase" or "prophase I"
   2. label "diploid" or "haploid"
6. You should show crossing over in a single pair of chromosomes; only 1 of the 3 pairs should cross over.
7. In the crossing over event, you should have 2 alleles for a single gene; each chromosome of the homologous pair that crosses over should have a unique allele for the same gene (like height in pea plants).  Please identify these alleles somehow on your digram using letters or labels.

• Assessment is on clarity, accuracy, neatness.
• You should be able to identify all vocabulary words throughout the process of nuclear division in both mitosis and meiosis.
• You should be able to explain and identify non-disjunction and its consequences in meiosis.
• Due Monday (HL) and Tuesday (SL).