. Author manuscript; available in PMC: 2021 Dec 1.

Published in final edited form as: Dev Biol. 2020 Aug 5;468(1-2):133–145. doi: 10.1016/j.ydbio.2020.07.015

Table 1.

MyoD and Myf5 null alleles used in this study, with resulting gene dosages of MyoD, Myf5 and Mrf4. The Myf5^m1 allele (Braun et al., 1992) also abrogates expression of the closely linked Mrf4 gene in the embryo (Yoon et al., 1997), whereas myotomal Mrf4 expression is not appreciably affected in Myf5^loxP/loxP embryos (Kassar-Duchossoy et al., 2004).

	# Active Alleles
Genotype	MyoD	Myf5	Mrf4	Total
(A) MyoD^m1/m1;Myf5^m1/m1	0	0	0	0
(B) MyoD^m1/+;Myf5^m1/m1	1	0	0	1
(C) MyoD^m1/m1;Myf5^m1/loxP	0	0	1	1
(D) MyoD^m1/m1;Myf5^bxP/loxP	0	0	2	2
(E) MyoD^m1/+;Myf5^m1/loxP	1	0	1	2
(F) Myo D^m1/m1;Myf5^m1/+	0	1	1	2
(G) MyoD^m1/+;Myf5^loxP/loxP	1	0	2	3
(H) MyoD^m1/m1;Myf5^loxP/+	0	1	2	3