Coloured SEM of human sperm: male & female types

Numéro d’image : 11874110
Coloured SEM of human sperm: male & female types
Male and "female" sperm types. Coloured Scanning Electron Micrograph (SEM) of mature human sperm colour-coded to symbolise those with an X (male) or Y (female) sex chromosome. X chromosome (pink) sperm produce a female foetus after fertilisation; Y chromosome (blue) sperm produce a male foetus. Since the egg always contains an X chromosome,it is the sperm that determines sex of the foetus: male (XY),female (XX). Sperm are the motile male sex cells produced in the testis. Each sperm has a head containing the genetic material,a neck,and a tail that enables it to swim. Millions of sperm are produced by the male,but only one can ferti- lize the egg. Magnification x1100 at 6x4.5cm size
Licence : Droits gérés
Crédit: Science Photo Library / Brain, Dr. Tony
Taille de l’image : 4812 px × 3720 px
Model Release : Non requis
Property Release : Non requis
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