NEET BIOLOGY

Detailed explanation-1: -A characteristic of any species with only a limited number of possible values shows discontinuous variation. Human blood group is an example of discontinuous variation. In the ABO blood group system, only four blood groups are possible (A, B, AB or O). There are no values in between, so this is discontinuous variation.

Detailed explanation-2: -Human blood groups are another great example of discontinuous (discrete) variation. There are only four possible distinct blood groups. They are A, B, AB, or O. In other words, all people fall into one of these categories.

Detailed explanation-3: -Which are examples of discontinuous variation? Discontinuous: Eye colour, handedness & lobed/lobeless ears. Continuous: Hand span, arm length & height.

Detailed explanation-4: -Discrete, or discontinuous, traits are controlled by a small number of genes, often only one. These genes generally have two alleles. For instance, Mendel’s pea seeds had two alleles for shape: smooth or wrinkled. An example of human alleles is seen with freckles; each person has a freckled or non-freckled allele.