Table 1. FrY recovery from wildtype and mutant males (38° 1 hr. heat shock at 0–24 hours of development).

	male progeny
tested males	Y	FrY	female progeny	FR	SR	N	% fertile
a +	4496	566	5845	0.11	0.87	205	64
b lok	151	1372	3542	0.90	0.43	112	65
c lok +/−	391	786	1240	0.67	0.95	40	65
d lok +/−	969	390	1661	0.28	0.82	52	90
e lok; {lok+}	782	1185	2367	0.60	0.83	225	31
f p53	1119	13	1332	0.011	0.85	136	23
g p53	2190	152	2739	0.065	0.86	578	16
h p53; {p53+}	2181	491	3148	0.18	0.85	414	23
i lok; p53	113	914	2221	0.89	0.46	136	52

Males were testcrossed individually to y w females. FR = fragment ratio calculated as FrY/(FrY + Y) sons; SR = sex ratio calculated as (total male progeny)/(total female progeny); N, total males testcrossed; % fertile is fraction of testcrossed males that produced any progeny. Genotypes of males tested:

^a y w 70FLP3F/DcY, H1.

^b y w 70FLP3F/DcY, H1; lok^P6 (from lok^P6 homozygous mothers).

^c y w 70FLP3F/DcY, H1; lok^P6/+ (from lok^P6 homozygous mothers).

^d y w 70FLP3F/DcY, H1; lok^P6/+ (from lok^P6/+ heterozygous mothers).

^e y w 70FLP3F/DcY, H1; lok^P6; P{lok⁺}^AM12/+ (from lok^P6/+ heterozygous mothers).

^f y w 70FLP3F/DcY, H1; p53^5A-1-4 (from p53^5A-1-4 homozygous mothers).

^g y w 70FLP3F/DcY, H1; p53^5A-1-4 (from p53^5A-1-4/+ heterozygous mothers).

^h y w 70FLP3F/DcY, H1; P{p53⁺, ry⁺}3A/+; p53^5A-1-4 (from p53^5A-1-4 homozygous mothers).

ⁱ y w 70FLP3F/DcY, H1; lok^P6; p53^5A-1-4 (from lok^P6/+; p53^5A-1-4/+ heterozygous mothers).