very important problem will only be
on specific genes which are markers

The production of this review
by grants from the Ford Foundation,

Child Health and Human Development,

TABLE 1

resolved by careful studies
for individual chromosomes.
has been supported in part
National Institute for

and the Population Council.

*
Cases of freemartinism in cattle

and their cytogenetic sex

———

Author No. cases Cytogenetic
Proven freemartins sex
Goodfellow, Strong & Stewart (1965) 2 XX/XY
Herschler & Fechheimer (1967) 13 XX /XY
Herschler & Fechheimer (1966) A XX/XY
Gerneke (1967) 3 XX/XY
Kanagawa, Muramoto, Kawata & 4 XX /XY
Ishikawa (1965)
Kanagawa, Kawata, Ishikawa, Muramoto 2 XX /XY

& Ono (1965)