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. EF.GKMN EF.GKMKMN RT.VXZ RT.VXZ Select one Pericentric Inversion O Reciprocal Translocation O Reverse Tandem Duplication O Nonreciprocal Translocation O Tandem Duplication ORobertsonian Translocation O Terminal Deletion O Interstitial Deletion Paracentric Inversion An individual has the chromosomes below where the dot represents the centromere NOP.QRSTU NRQ.POSTU If a crossover event occurs between the O and P loci, what is the longest 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 is "REVERSE TANDEM DUPLICATION",

Thus is because , the sequence, EF.GKMN, the chromosome with GK have been duplicated and pasted again before MN , and hence the new sequence has become EF.GKGKMN

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