[Intestinal arginase in the phylogenetic development of animals].

The activity of intestinal arginase was studied in 31 species belonging to the types Annelides, Arthropoda and Chordata. Large variations of the enzyme activity were tested. The differences were of 2 orders of magnitude--100 times.

Incorporation of uridine and leucine by the germinal discs of quail eggs kept cool or warmed periodically during storage.

Nucleic acid and protein biosyntheses are characteristic of the fertilised germinal disc and continue during storage at 20 degrees C though at a reduced rate. There is no comparable activity in unfertilised eggs. 2.

The gene of golden plumage colour linked with lower fertility in Mangurian Golden quail.

Relation between golden plumage colour and lowered fertility has been found in quails (Coturnix coturnix japonica). Golden colour of plumage is due to the presence of a single gene G, while its recessive alleles gg determine partridge-like colour. Homozygotic birds of GG pattern die during incubation.