The development of adaptive traits is a result of natural selection, one of the main mechanisms underlying evolutionary change.
Understanding natural selection is also becoming more and more important in real-world settings, such as resource management, agriculture, and medicine. Even among people with postsecondary physical education, studies show that natural selection is generally very poorly understood.
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23 pairs of chromosomes will be the answer
Estrogen and testosterone are non polar in nature.They can easily pass the cell mambrane which is made up of lipid bilayer.After entering the cell they bind to their intracellular receptors present in the cytoplasm.
The receptor hormone complex moves to the nucleus and perform transcription and later on translation of desired proteins.
Estrogen helps in the functioning of reproductive system as it supports growth and differentiation.Whereas testosterone is important for sertoli cells which help in the process of spermatogenesis i.e formation of sperm.
Molten Lava, and not solid like the crust.
