Homework Soursedentify the type of chromosome alteration for the four trans
dentify the type of chromosome alteration for the four transitions listed below.
LMNOPQRST LMNRST
LMNOPQRST LMNQPORST
LMNOPQRST LMNOPQRSOPQT
LMNOPQRST LMABCNOPQRST
inversion
duplication
translocation
deletion
| - A. B. C. D. | LMNOPQRST LMNRST |
| - A. B. C. D. | LMNOPQRST LMNQPORST |
| - A. B. C. D. | LMNOPQRST LMNOPQRSOPQT |
| - A. B. C. D. | LMNOPQRST LMABCNOPQRST |
Solution
LMNOPQRST LMNRST
In this case, it is without a doubt Deletion as the genes OPQ are deleted from the chromosome. (D)
LMNOPQRST LMNQPORST
This is a proper case of Inversion, as OPQ---> QPO in the before and after scenarios. (A)
LMNOPQRST LMNOPQRSOPQT
This is a little tricky as you see two repetitions of OPQ. This is most likely due to Duplication. (B)
LMNOPQRST LMABCNOPQRST
Here, ABC has been inserted randomly from another chromosome, hence it is an example of translocation. (C)
