Changes in Problem Book, 17th edition (2004)

This is the information you need if you have the 16th edition, revised (2003). If you have the 16th edition (2002), check here

If you have an older edition (before 2002) you need to look here.

There are significant changes  in the 17th edition (relative to the 16th). New problems were added to 1, 2, 3R, 4, 6 & 8. Old problems were rewritten and/or renumbered in 1, 3, 4, 5 & 6.  (Details are below.) No major changes were made in the other problem sets.

Problem Set 1 -- major changes.
    1-1 to 1-9 are same.
    1-10 & 1-11 are new.
    1-10 to 1-22  are renumbered 1-12 to 1-24.
    1-23 is omitted (content of old problem is included in new 10 & 11)
    1-25 is new.

Problem Set 2
    2-18 replaced by new problem   
    2-20 --> 3R.

Problem Set 3
    3-6. Part F added
    3-10. New part  B added. Old B, C --> C, D.

Problem Set 3R has new problems; all other "R" problem sets are the same.
    Added 3R-4 (old 2-20)
    New 3R-5.

Problem Set 4 -- major changes
    4-1 to 4-10 are same.
    Remainder are renumbered, a new part was added to one prob. & 2 new problems were added
        New part added to old 4-11 --> 4-13.
        4-18 & 4-19 are new -- retooled versions of problems from old prob. set 5

Old # New #
4-11 4-13
4-12 4-17
4-13 4-14
4-14 4-15
4-15 4-16
4-16 4-11
4-17 4-12
  4-18 (new)
  4-19 (new)

Problem Set 5
    5-1 to 5-10 are unchanged.
    5-11 is rewritten.
    5-13. Order of parts rearranged.   
    5-14 & 5-15 -- rewritten; parts used to make new 4-18 & 4-19.

Problem Set 5R -- no change.

Problem Set 6 -- major changes
    6-1 to 6-3 are same.
    Old 6-4 -- replaced by new problem.
    Rest is same, except for a few typos and comments, but order of problems is different.

Old # New #
6-4 deleted
6-5 6-9
6-6 6-10
6-7 6-6
6-8 6-7
6-9 6-4
6-10 6-8
  6-5 (new)

Problems Sets 7 & 7R are unchanged

Problem Set 8
    One new "warm up" problem added -- called 8-0.

Problem Sets 8R, 9, 10 & 10R -- no changes.

Answer to 8-10 is missing in the 16th ed, revised. Here it is:

8-10.     A.  N = 3 (zygote is diploid so 2N = 6)
            B.  12 DNA molecules

Problem Set 11
    A few comments added to 11-4 & 11-12.

Problem Set 12
    12-2. Slight modification in growth conditions in part C.

For problem 12-2, part C, case (i). These bacteria cannot grow in minimal medium with lactose as the only carbon source -- they have no functional lac operon. You would have to grow them in minimal medium including lac plus another sugar to serve as a carbon source. (You can't use glucose as the "other sugar" because glucose interferes with metabolism of lactose.)

Problem Set 12R -- no change.

Problem Set 13
    13-10. Assume no alt. splicing in part A.

Problem Sets 13R & 14 -- no changes.

Problem Set 15
    15-4-E -- "bottleneck effect" replaced by "drift over multiple generations."