How might environmental risk factors affect genes?
Environment Can Impact Phenotype
Environmental factors such as diet, temperature, oxygen levels, humidity, light cycles, and the presence of mutagens can all impact which of an animal’s genes are expressed, which ultimately affects the animal’s phenotype.
How does the environment affect genetic variation?
These results suggest that ecological factors can have strong impacts on both population size per se and intrapopulation genetic variation even at a small scale. On a more general level, our data indicate that a patchy environment and low dispersal rate can result in fine-scale patterns of genetic diversity.
How does environment impact our genes in relation to health and illness?
For example, some gene changes can make you more likely to get cancer. Your environment can also directly cause changes to DNA inside your cells. For example, the sun damages DNA in the cells that are exposed to it, and if the damage goes unrepaired, these gene changes will be copied as your body creates new cells.
How do environmental and genetic factors influence the growth of organisms?
How do environmental and genetic factors influence the growth of organisms? Genetic factors as well as local conditions affect the growth of organisms. − A variety of local environmental conditions affect the growth of organisms. Genetic factors affect the growth of organisms (plant and animal).
What kind of environmental factors can cause mutations in gene expression?
Mutations can also occur as the result of exposure to environmental factors such as smoking, sunlight and radiation. Often cells can recognize any potentially mutation-causing damage and repair it before it becomes a fixed mutation. Mutations contribute to genetic variation within species.
What are some environmental factors that can cause epigenetic changes?
Epigenetic marks can be affected by exposure to metals, air pollution, benzene, organic pollutants, and electromagnetic radiation . Chemical and xenobiotic compounds in water or the atmosphere are other potential environmental stressors capable of changing epigenetic status.
What types of environmental factors can influence DNA methylation?
DNA methylation can be influenced by environmental factors such as diet, hormones, stress, drugs, or exposure to environmental chemicals, suggesting that environmental factors may contribute to adverse neurodevelopmental outcomes of relevance to ASD via effects on DNA methylation in the developing brain.
How do environmental factors affect child development?
An enriching and stimulating home environment fosters healthy growth and brain development by providing a child with love, emotional support, and opportunities for learning and exploration. In families where only one parent is present, there are often fewer economic and emotional resources.