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Multiple Choice
Which of the following external environmental factors does not influence gene expression?
A
Gravity
B
Light
C
Temperature
D
Nutrient availability
Verified step by step guidance
1
Understand that gene expression can be influenced by various external environmental factors. These factors can affect how genes are turned on or off, impacting the organism's phenotype.
Consider how light can influence gene expression. For example, in plants, light can trigger the expression of genes involved in photosynthesis.
Examine the role of temperature in gene expression. Temperature changes can lead to the activation or repression of certain genes, affecting processes like metabolism and development.
Evaluate nutrient availability as a factor. Nutrients can regulate gene expression by providing the necessary components for cellular processes, influencing growth and development.
Recognize that gravity is not typically considered an external environmental factor influencing gene expression. While gravity affects physical orientation and growth patterns, it does not directly alter gene expression in the same way as the other factors listed.