Sex determination in birds

The sex of birds is determined by the inheritance of sex chromosomes. Females have the heterogametic sex chromosomes ZW, whereas males have the homogametic ZZ. ... The chromosome number of chickens is 2n = 78, and ten pairs of macrochromosomes (Chromosomes 1–9, Z, and W) and 29 pairs of microchromosomes can be observed. #SexDeterminationInBirds #ZWSexDetermination #Genetics #breedingOfPoultry