Question

Which represents a deletion of a section of the DNA shown here?



A—C—T—G—G—A—T



A.


A—C—T—C—C—G—G


B.


A—T—C—G—A—T


C.


A—C—T—A—G—A—T


D.


A—G—G—A—T

Answer 1

A deletion does not change the original sequence, merely a frame-shift of the sequence. Can you figure out which would correspond to a deletion in this instance?

Answer 2

no

Answer 3

In this case, only 1 of the sequences actually has a sequence similar (but NOT identical to the given sequence, with the exception of a small section which has been removed. Try to identify that sequence?

Answer 4

c?

Answer 5

No, it's D. Do you see why?

Answer 6

oh yes

Answer 7

A section (CT) has been removed from the original sequence. Glad to see that you've understood it. Please close this thread. Thanks.