Biology · Variation and Genetics

Discontinuous Variation: variation in phenotypic traits in which types are grouped into discrete categories with few or no intermediate phenotypes.
Examples of discontinuous variation include tongue rolling, finger prints, eye colour,blood groups and gender.
Continuous Variation:variation in phenotypic traits such as body weight or height in which a series of types are distributed on a continuum rather than grouped into discrete categories.

a) Range of height of pea plants 30-50 cm: This is an example of continuous variation. Continuous variation refers to traits that can take any value within a range and are influenced by multiple genes and environmental factors. In this case, the height of pea plants can vary continuously between 30 cm and 50 cm due to a combination of genetic and environmental influences. 

Discontinuous Variation: variation in phenotypic traits in which types are grouped into discrete categories with few or no intermediate phenotypes.
Examples of discontinuous variation include tongue rolling, finger prints, eye colour,blood groups and gender.  

c) Pea plants grown in darkness are yellow: This is an example of continuous variation. Discontinuous variation, also known as qualitative variation, refers to traits that exhibit distinct categories or discrete phenotypes with no intermediate values. In this case, the color of pea plants grown in darkness being yellow is a distinct trait that is different from the typical green color of plants grown in light. 

d) Adult human weight ranges from 50-95 kg: This is an example of continuous variation. As mentioned earlier, continuous variation involves traits that can take any value within a range and are influenced by multiple genes and environmental factors. The weight of adult humans can vary continuously between 50 kg and 95 kg due to a combination of genetic, dietary, and lifestyle factors.