2. The following diagram represents two nonhomologous chromosomes: AB CDEFG RS T

Question

2. The following diagram represents two nonhomologous chromosomes: AB CDEFG RS TUVWX What type of chromosome mutation would produce each of the following chromosomes? a. AB CD RS TUVWXEFG b. AUVB CDEFG RS TWX c. AB TUVFGD RS CDEWX d. AB CWG RS TUVDEEX 3. The green-nose fly normally has six chromosomes: two metacentric and four acrocentric. A geneticist examines the chromosomes of an odd-looking green-nose fly and discovers that it has only five chromosomes: three metacentric and two acrocentric. Explain how this change in chromosome number might have taken place.

Explanation / Answer

2.a)Nonreciprocal translocation of E F G

b)Nonreciprocal translocation of U V

c)Reciprocal translocation of C D E and T U V

d)Reciprocal translocation of D E F and W.

3.A Robertsonian translocation between two of the acrocentric chromosomes would

result in a new metacentric chromosome and a very small chromosome that may

have been lost.

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