pollen (1) morphologie (1) anatomie (1) évolution (1) dosage (1) jeune (1) Morphology (1) Anatomy (1) Phenotype (1) Genes (1) X chromosome (1) Sex chromosomes (1) Sex (1) Possibility (1) Population (1) Pollen (1) Morphology (1) Males (1) Maintenance (1) Histology (1) Fertility (1) Females (1) Farm produce (1) Evolution (1) Evidence (1) Electron microscopy (1) Degeneration (1) Competition (1) Chromosomes (1) Anatomy (1)