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Many aspects of an animal or plant can be correctly called adaptations, though there are always some features whose function remains in doubt. By using the term adaptation for the evolutionary process, and adaptive trait for the bodily part or function (the product), one may distinguish the two different senses of the word. [14] [15] [16] [17]
Despite these apes having the same genes, methylation differences are what accounts for their phenotypic variation. The genes in question are involved in development. It is not the protein sequences that account for the differences in physical characteristics between humans and apes; rather, it is the epigenetic changes to the genes.
A plant morphologist makes comparisons between structures in many different plants of the same or different species. Making such comparisons between similar structures in different plants tackles the question of why the structures are similar. It is quite likely that similar underlying causes of genetics, physiology, or response to the ...
Differences between plant and animal physiology and reproduction cause minor differences in how they evolve. One major difference is the totipotent nature of plant cells, allowing them to reproduce asexually much more easily than most animals.
These components are crucial to general plant growth and are the harbingers of development. Meristematic tissue apparently contains characteristic epigenetic modifications. For example, the boundary between the proximal meristem and elongation zone showed elevated H4K5ac along with a high level of 5mC in barley. Root meristematic tissues have ...
On top of the gradual growth of the plant, the image reveals the true meaning of phototropism and cell elongation, meaning the light energy from the sun is causing the growing plant to bend towards the light aka elongate. Plant growth and development are mediated by specific plant hormones and plant growth regulators (PGRs) (Ross et al. 1983). [10]
Adaptationism is an approach to studying the evolution of form and function. It attempts to frame the existence and persistence of traits, assuming that each of them arose independently and improved the reproductive success of the organism's ancestors.
Shade tolerant plants have a range of adaptations to help them survive the altered quantity and quality of light typical of shade environments. Excess light occurs at the top of canopies and on open ground when cloud cover is low and the sun's zenith angle is low, typically this occurs in the tropics and at high altitudes.