In the fetal and embryonic stages of development, testosterone promotes the development of the penis and scrotum and the formation of the structures involved in sperm production. Hence when I interact with testosterone I bound to the albumin and globulin proteins as well as those that do not bind cause physiological changes.

Diving into a world where one can discover how the impact of biomolecules affects our lives. I am like a biconcave disk flattened in the centre which gives my donut shaped appearance. I have no nucleus, I can live for about 3 to 4 months. I provide a large surface area for diffusion to occur. I bet you know who I am at this point. Last hint! I contain the red pigment, haemoglobin. Ah, so now you know me! I am a RED BLOOD CELL.

Zebrafish is a model organism used to study embryonic development as they are encased by a transparent sac which allows researchers to see various stages of organ development. Added advantages include short generation time and also the large number of offspring produced.

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