1— I
1
1
[
—
(a) Stage 6 — 9 (cleavage)
1—i
1
1
r
(b) Stage 10 - 12 (dilution)
1—i
1
1
r
(c) Stage 23 — 25 (neurula)
1—i
1
1
[
—
(f) Stage 42 - 43 (sw. tadpole)
I
1.6 2.2 3.4
5.8
10.6
.(h)
1 1
1
1
1
0-8
—
i
i
i
i
1
i
i
i
i
1.6 2.2
2
3
15 20
Portions of RNA added
FIG. 8. Competition experiment between pulse-labeled RNA from gastrulae (stage
10-12) and nonlabeled RNA from other stages. In (g) are summarized the results of
(a) to (f) on a per embryo basis, and in (h) the results of another experiment performed under the same conditions are shown. For further explanation, see Fig. 5.
17 21
"I
2
3
5
9
17 21
Portions of RNA added
FIG. 9. Competition experiment between pulse-labeled RNA from gastrulae
(stage 12) and nonlabeled RNA from adult cells. In (e) are summarized the
results of (a) to (d) on a RNA basis. The dilution curve and the competition curve
produced by RNA from a whole adult coincide. No comparison could be made on
a per cell basis since the RNA content of adult cells was not determined.
% Hybridization
%
Hybridization
106
:
43.
% Hybridization
128