I am having a lot of problems with this question. Please explain how to get the
ID: 212654 • Letter: I
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I am having a lot of problems with this question. Please explain how to get the answer thoroughly so that I can understand it.
Map The figure below shows the karyogram of a human cancer cell 17 18 19 13 14 5 20 12 Select the statements that the karyogram supports There is an inversion in chromosome 3 There is a reciprocal translocation between chromosomes 10 and 20 Part of chromosome 18 has been translocated to the X chromosome All of the genes on chromosome 15 are present in only one copy Chromosome 5 has been duplicatedExplanation / Answer
In this question I will explain all possibilities step wise.
Inversion in chromosome 3, this chromosome has 5 different chromosome however no intra chromosomal or inter chromosomal inversion is observed in this chromosome
Reciprocal translocation between 10 and 20, as we observe chromosome 20 sharply, the extra 3 banded green color region is translocated from chromosome 16 (last chromosome of 16) but not from the chromosome 10.
Not 18 but the part of the chromosome 6 is translocated to chromosome X. you can see the p arm of chromosome of chromosome 6 is inverted and attaché with X chromosome.
All of the gene on chromosome 15 are in single copy. It option is right. Because the 15 number chromosome is single. As we know each chromosome are in 2n number hence each gene have two copy, echa on each chromosome. here only single chromosome is present so the genes are in single copy.
Chromosome 5 is not duplicated. Duplication process is occurred on some region of sequences or some portion not the whole chromosome. chromosome 5 has an extra chromosome which is called as trisomy and is occurred due to the non disjunction event in cell division.
the right option is all of the genes on chromosome 15 are presented in only one copy.
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