Possible Clues:

• Like does and mares
• A gender
• 'The future is ___' (T-shirt slogan)
• Having XX chromosomes
• Like fillies and mares
• A poem by Patti Smith from her 1972 book 'Seventh Heaven'
• Sow or cow
• About half of us are ill when in France and in charge
• Characteristic of women
• Pen, for instance