Скачать или смотреть Continuous and Discontinuous Variation| Artificial Selection

Continuous variation and discontinuous variation are two ways in which traits or characteristics of organisms can be inherited and expressed within a population. These concepts are fundamental in the field of genetics and biology.

Continuous Variation (Quantitative Variation):

Definition: Continuous variation refers to the inheritance and expression of traits that can take on a wide range of values within a population. These traits are usually controlled by multiple genes and are influenced by environmental factors.
Examples: Height, weight, skin color, and intelligence are examples of traits that exhibit continuous variation. In the case of height, for instance, individuals can vary from very short to very tall, and there are numerous intermediate heights in between
Discontinuous Variation (Qualitative Variation):

Definition: Discontinuous variation refers to the inheritance and expression of traits that fall into distinct, non-overlapping categories or classes. These traits are typically controlled by one or a few genes, and there are limited or no intermediate forms between the categories.
Examples: Blood type (A, B, AB, O), eye color (blue, brown, green), and certain genetic disorders like cystic fibrosis are examples of traits with discontinuous variation. In these cases, an individual typically falls into one of a few discrete categories.

Artificial selection is a process in which humans deliberately choose and breed individuals with desirable traits or characteristics to produce offspring with specific, desired features. This selective breeding is often applied to plants and animals for agricultural, aesthetic.



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