Answer :
Environmental variables can also affect cell differentiation and gene expression. For instance, temperature, salinity, and the amount of available nutrients can all affect how an organism's genes are expressed.
The Himalayan rabbit's genes that control fur color are activated and inactivated in response to temperature.The environment, which comprises the external environment in which an organism is placed or develops as well as the organism's internal environment, which includes elements like its hormones and metabolism, can affect how genes are expressed in an organism.Temperature and light are two additional environmental elements outside of medications and chemicals that can affect how certain organisms express their genes. The C gene, for instance, is present in Himalayan rabbits and is necessary for the formation of colors in the fur, skin, and eyes.
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