When environmental factors influences gene expression this is referred to as?
When environmental factors influence gene expression, this is referred to as: multifactorial inheritance. If two alleles code for the same trait (such as blond hair), they are said to be: homozygous.
How does the environment influence genes?
Environmental factors such as food, drugs, or exposure to toxins can cause epigenetic changes by altering the way molecules bind to DNA or changing the structure of proteins that DNA wraps around.
What factors affect gene expression?
Various factors, including genetic makeup, exposure to harmful substances, other environmental influences, and age, can affect expressivity. Both penetrance and expressivity can vary: People with the gene may or may not have the trait and, in people with the trait, how the trait is expressed can vary.
What environmental influences mean?
1 external conditions or surroundings, esp. those in which people live or work. 2 (Ecology) the external surroundings in which a plant or animal lives, which tend to influence its development and behaviour. 3 the state of being environed; encirclement.
What is influenced both by genes and by environmental factors?
Like most aspects of human behavior and cognition, intelligence is a complex trait that is influenced by both genetic and environmental factors. … Elements of intelligence include the ability to reason, plan, solve problems, think abstractly, and understand complex ideas.
What are environmental factors?
Environmental factors include temperature, food, pollutants, population density, sound, light, and parasites. The diversity of environmental stresses that have been shown to cause an increase in asymmetry is probably not exclusive; many other kinds of stress might provide similar effects.
What does increased gene expression mean?
Gene expression is the process by which the instructions in our DNA are converted into a functional product, such as a protein. … It acts as both an on/off switch to control when proteins are made and also a volume control that increases or decreases the amount of proteins made.
How are genes expressed?
Gene expression is the process by which the information encoded in a gene is used to direct the assembly of a protein molecule. The cell reads the sequence of the gene in groups of three bases. Each group of three bases (codon) corresponds to one of 20 different amino acids used to build the protein.
Drugs and Chemicals
The presence of drugs or chemicals in an organism’s environment can also influence gene expression in the organism. Cyclops fish are a dramatic example of the way in which an environmental chemical can affect development.
Can environment change genes?
Environmentally induced changes in gene expression occur when exposure to chemicals changes which genes are turned “on” or “off”—which can change how the cells function and thus a person’s predisposition to disease. The effect of this chemical modification is called epigenetic regulation.
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).