TABLE 1.

Karyotypes of common shrews used in this study

Karyotypea	2n	Race	No. of specimens	No. of cells analyzed
jl, kq, no	21	Oxford	2	23
jl, kq, n, o	23	Oxford	1	35
jl, k/q, n/o	23	Oxford	3	106
jl, k/q, n, o	24	Oxford	2	54
jl, k, n/o, q	24	Oxford	3	91
j/l, k, n/o, q	25	Oxford	1	27
jl, ko, n, q	23	Wirral	2	43
jl, k/o, n, q	24	Wirral	2	53
jl, k, n, o, q	25	Acrocentric	6	206
Total			22	638

^aOnly the variable chromosomes are given; see text.