Bio St 3.2.3

Front

What is genetic expression?

Back

Genetic expression is the process by which information from a gene is used to synthesize a functional gene product, usually proteins, which determine traits.

Front

How can the environment affect genetic expression?

Back

Environmental factors such as sunlight, temperature, and soil pH can influence how genes are expressed, leading to variations in traits.

Front

What is an example of genetic expression influenced by the environment?

Back

The sun lightens someone's hair.

Front

What does it mean if a trait is polygenic?

Back

A polygenic trait is one that is controlled by multiple genes, resulting in a range of phenotypes.

Front

What is an example of a polygenic trait?

Back

Height in humans is an example of a polygenic trait.

Front

What is PKU (Phenylketonuria)?

Back

PKU is a genetic disorder where the body cannot process high protein foods due to a deficiency in the enzyme phenylalanine hydroxylase.

Front

Which condition can be managed through diet and exercise?

Back

Diabetes can be effectively managed through diet and exercise.

Front

What is the significance of pH in soil for plants?

Back

Soil pH can affect the color of flowers in some plants, such as hydrangeas, by influencing the availability of certain nutrients.

Front

What is a recessive trait?

Back

A recessive trait is one that is only expressed when two copies of the recessive allele are present.

Front

What is the difference between dominant and recessive traits?

Back

Dominant traits are expressed when at least one dominant allele is present, while recessive traits require two recessive alleles to be expressed.