Explain codominance with the help of one example.

OR

What do the forelimbs of whales, bats and cheetah with respect to evolution signify? Provide one such example in plants.

The codominance expressed by the alleles. Genes are the units of hereditary information that are responsible for many of a person's characteristics. The individuals receive one allele from each parent and the dominant allele from a parent is exposed and the recessive character is masked. Whether it's recessive or dominant, in codominance both the characters of alleles are expressed.

Different types of proteins appear on the outside of red blood cells and these alleles are A, B, and O. The O allele does not represent any protein, therefore people with the O feature lack both A and B proteins. The O type is an example of a dominant or recessive relationship: if either A/B is expressed, the O type is not expressed. In the A and B proteins, it codes for two different proteins. Here, who inherits an A allele from one parent and a B allele from the other will express both proteins in a codominance, resulting in an AB blood type.

OR

The whale, bats and cheetahs are descendants of the homologous ancestor where they fall under order mammals; the homologous structure is an organ system present in an organism which shares a common ancestor, for example, vertebrate limbs, brain and heart. In plants, it has a similar structure and function of the forelimb. The leaves of Venus flytrap and pitcher plant have modified leaves which helps to capture insect while cactus leaves are modified into spines for transpiration. Tendrils in the pea plants are modified of leaves to produce support to the plant while spines of barberry plants are modified leaves to provide protection.