Question

What is the gene expression and the environment?

Answer 1

Environment has huge effects on the expression of genes. Many factors including hormones, light, temperatures, drugs administered, metabolism, external environment in which the organism or humans survive. Below are some of the instances for the above factors.

Administered drugs has effects in infants. Application of oxygen causes blindness in pre mature infants. Also it is observed that increased level of oxygen leads to normal rhythm of breathing pattern. Hormones such as testosterone and di hydro testosterone causes baldness in males. External factor such as temperatures affects gene expression, Himalayan rabbits require C gene for the pigmentation of skin, fur, eyes. Expression of C gene is regulated by temperature and is inactive at above 35 degrees and is active between 15 to 25 degrees.