A fertile female co-twin to a male calf.

Lignende værker

• Evidence that prenatal testosterone transfer from male twins reduces the fertility and socioeconomic success of their female co-twins
  af: Bütikofer, Aline, et al.
  Udgivet: (2019)
• Male twins reduce fitness of female co-twins in humans
  af: Lummaa, Virpi, et al.
  Udgivet: (2007)
• A masculinizing effect on the auditory systems of human females having male co-twins.
  af: McFadden, D
  Udgivet: (1993)
• Males Do Not Reduce the Fitness of Their Female Co-Twins in Contemporary Samples
  af: Medland, Sarah E., et al.
  Udgivet: (2008)
• Sexual conflict in twins: male co-twins reduce fitness of female Soay sheep
  af: Korsten, Peter, et al.
  Udgivet: (2009)