1. Chromosome counts were made on 105 spermatogonial and diakinesis cells prepared from testicular tissue taken from 10 hybrid cockerels.
2. The modal numbers for the diploid chromosome and haploid chromosome complements were 78 and 39 respectively.
Notes
Present address: School of Agriculture, West Mains Road, Edinburgh EH9 3JG, Scotland.
Paper number 31–75 from the Ohio Agricultural Research and Development Centre.