I need hep with number one, I still do not really understand how to do this. Ple

Question

I need hep with number one, I still do not really understand how to do this.

Please show all of your work. Please turn in your answers on separate paper. It does not need to be typed, but be aware that an illegible answer may be counted as incorrect. The exam is due one week from the day it was passed out. Five points will be deducted for every day the exam is late. Questions are worth 10 points each. A chromosome initially has the following gene order: Draw the chromosome, identifying the gene order (including the centromere), that would result from each of the following mutations. Please explain how the process of non-disjunction occurs in both meiosis I and meiosis II, and list the gametes that result from each type of non-disjunction. You may draw diagrams if this will help your answer, but you must also provide a written explanation. The genome of Drosophila replicates in about 3 minutes. The genome of E. coli

Explanation / Answer

normal gene ..............AB*CDEFG

a.Tandem duplication of DEF.....................AB*CDEFDEFG (doubling of chomosomal segment, both the segments are adjacent to each other)

b. Deletion of FG................AB*CDE ( a part of chromosomal segment is lost)

c. Paracentric inversion of DEFG................AB*CGFED ( not involves centromere)

d. pericentric inversion of BCDE.............AEDC*BFG (involves centromere)

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