An organism described as 2n=4 has the chromosomes below with genes indicated by

Question

An organism described as 2n=4 has the chromosomes below with genes indicated by letters and centromeres indicated by periods. Select the BEST description of the chromosome aberration present in this organism.

ABC.EGGEH          ABC.EGH          RT.VXZ          RT.VXZ

Select one:

Paracentric Inversion

Tandem Duplication

Nonreciprocal Translocation

Robertsonian Translocation

Terminal Deletion

Pericentric Inversion

Reverse Tandem Duplication

Interstitial Deletion

Reciprocal Translocation

Question 21

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Question text

An individual has the chromosomes below where the dot represents the centromere:

ABCDEFG.H AEDCBFG.H

If a crossover event occurs between the B and C loci, what is the shortest chromosome formed?

Enter your answer with no spaces between the loci and use a period as the centromere.

Answer:

Explanation / Answer

Answer 1:

The correct answer will be: tandem duplication, becauce the sequence EG have been duplicated twice and in an reverse orientation and added back to the chromosoime.

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