Chromosome question!! Help!!!?

Question

Four of the five choices listed below describe changes at the chromosomal level. Select the exception.

1. Base-pair substitution

2. Duplication

3. Translocation

4. Deletion

5. Inversion

(I know 1, 3, 4, are not the answer. just not sure about 2 and 5!)

Answer 1

5 doesnt look familiar

Answer 2

Well that appears to be a flawed question to me, in that a case can certainly be made for all 5, or at the very least a case made against both 4 and 1 depending on how large the deletion is.

I'm not in favor of answering these kinds of questions for someone's homework or the like, but you might want to rethink how sure you are about #1

Answer 3

I hope the above posters were able to answer your question, but just an FYI, there are a handful of genetic diseases caused by duplication of chromosomes...the most well known being Down Syndrome, which involves (in some cases) 3 copies of chromosome 21.

Answer 4

1 is the exception. It is just switching one base pair for another. The other 4 are large-scale changes that (usually) affect more than a single gene.

Answer 5

on chromosomal level the duplication is exception .b/c it only occur at mitotic level.
(1)chromosome do have base pair changes
(3)they do translocated( that is their genes)
(4)a part of them may deleted b/c of many factors
(5)and its base may be inverted
the duplication of chromosomes need special process in the cell they are not be able to duplicate by themselves.
but other changes occurs mostly b/c of mutation.

Answer 6

5 is sure a change and can determine mutations

Answer 7

deletion