what determines whether the two organisms of a species will be exactly similar or not ?
Answers
Explanation:
Key points. According to the biological species concept, organisms belong to the same species if they can interbreed to produce viable, fertile offspring. Species are separated from one another by prezygotic and postzygotic barriers, which prevent mating or the production of viable, fertile offspring.
Answer:
Appearance is determined by a combination of genes, experiences of ancestors (epigenetic imprints), environment and also chance. Environment can also include nutrition, diseases/infections and traumatic events. Chance primarily means that, as we start out as single cells, mutations can happen each time a cell divides, so not all our cells are genetically identical. Probably you have met people where the left and the right eye have different colors? It can look quite fascinating. One of the two colors is likely the effect of a somatic mutation, meaning it will probably not be inherited.
But, if environments are similar, the genetic basis (the genome, comprising all the genes) is usually the most critical aspect. This is why identical twins usually look so similar.
Explanation:
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