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Inherited Traits
Heredity And Evolution
Heredity is a process in which organisms acquire characteristics from their parents. These characteristics are called traits. Every individual is unique because they have a unique set of traits. The traits which are transmitted by the parent to its offspring during the process of fertilization are inherited traits. This inheritance is determined by certain rules of heredity. Inherited traits are coded in our DNA and hence can be passed on to the next generation. Example: eye colour, height, complexion, hair colour etc.
The variations that emerge as a result of reproduction may be inherited which causes an increase in the survival rate of entities. For the same trait, there are two copies of genes in individuals that reproduce sexually. In case the copies are not identical to each other, the characteristic or the trait, which is expressed phenotypically is referred to as the dominant trait while the other is referred to as the recessive trait. These variations observed in the species can either bestow survival benefits or offer to the genetic drift.
However, if there are alterations in the non-reproductive tissues that are due to environmental factors, these are not inherited. If the variation is linked with geographical isolation, then there are chances of speciation taking place. Evolutionary dynamics are evident in organisms when they are classified. Not only living species, but even the study of fossil fuels can help in the study of evolution. The evolution of complex organs can be attributed to the survival benefits that occur at the intermediate stages. During the event of evolution, features or organs can be modified and adapted to perform new functions such as the evolution of feathers from providing warmth to aiding birds in taking a flight. Hence, evolution cannot be merely termed as progress to higher forms or lower forms, instead, it appears to have provided with complicated body structures and designs simultaneously when simpler structures are still thriving.
Acquired Traits
Acquired traits, on the other hand, are characteristics that are acquired by an individual in his lifetime. It may be acquired due to his own activities or external influence. Unlike inherited traits, acquired traits cannot be genetically passed on to the next generation. Example, the ability to dance, cook well etc.
Inherited Traits Examples
Though human beings are unique, there are a set of common characteristics that we all share with the members of our family, with our peers etc. We possess a unique set of traits. While some traits are governed by genes which are inherited from parents to the offsprings, there are traits that are acquired through observing, learning, most of which are determined by a combination of environmental factors and genes. Listed below are a few examples:
Tongue rolling
Earlobe attachment
Dimples
Curly hair
Freckles
Handedness
Hairline shape
Green/Red Colourblindness
Hand clasping
Rîtíkã Çhäûhāñ 5 years, 2 months ago
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