Food chains model energy flow through an ecosystem. Producers pump energy into an ecosystem from an environmental source, and this energy is then passed from one organism to the next.

4 0

3 years ago

A researcher is studying a population with a unique age structure. An age-structured histogram he has developed over the course

Rasek [7]

Answer:

The population first grows, stabilizes, and then declines.

Explanation:

A researcher is studying a population with a unique age structure. An age structured histogram he has developed over the course of several decades has undergone transformations in shape, from a pyramid shape to a roughly rectangular shape to an inverted pyramid shape (where the base is narrower than the top). The population first grows, stabilizes, and then declines.

6 0

3 years ago

Why are polygenic diseases less suited to gene therapy?

Nadya [2.5K]

Answer:

Polygenic therapies are more likely to show unintended effects in other regions of the genome likely resulting in harmful diseases.

Explanation:

Gene therapy involves biotechnological techniques that add or remove gene sequences in the genome. These are typically used in eliminating harmful genes that cause genetic diseases or disorders and are generally thought to improve an individual's quality of life.

Polygenic traits are controlled by several genes. Similarly, polygenic diseases may be caused by variations in several gene sequences. These include hypertension, heart disease, and diabetes. Polygenic therapies are more likely to show unintended effects in other regions of the genome, leading to other deleterious disease-causing effects.

3 0

3 years ago