Question

Morphological evidences of evolution

Answer 1

Evidence for evolution comes from many different areas of biology:Anatomy. Species may share similar physical features because the feature was present in a common ancestor (homologous structures).Molecular biology. DNA and the genetic code reflect the shared ancestry of life. DNA comparisons can show how related species are.Biogeography. The global distribution of organisms and the unique features of island species reflect evolution and geological change.Fossils. Fossils document the existence of now-extinct past species that are related to present-day species.Direct observation. We can directly observe small-scale evolution in organisms with short lifecycles (e.g., pesticide-resistant insects).IntroductionEvolution is a key unifying principle in biology. As Theodosius Dobzhansky once said, “Nothing in biology makes sense except in the light of evolution.”^11start superscript, 1, end superscriptBut what, exactly, are the features of biology that make more sense through the lens of evolution? To put it another way, what are the indications or traces that show evolution has taken place in the past and is still happening today?Evolution happens on large and small scalesBefore we look at the evidence, let's make sure we are on the same page about what evolution is. Broadly speaking, evolution is a change in the genetic makeup (and often, the heritable features) of a population over time. Biologists sometimes define two types of evolution based on scale:Macroevolution, which refers to large-scale changes that occur over extended time periods, such as the formation of new species and groups.Microevolution, which refers to small-scale changes that affect just one or a few genes and happen in populations over shorter timescales.Microevolution and macroevolution aren’t really two different processes. They’re the same process – evolution – occurring on different timescales. Microevolutionary processes occurring over thousands or millions of years can add up to large-scale changes that define new species or groups.
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Answer 2

Answer:

Morphological Evidences

Explanation:

Various similarities like  structure of mouth, position of  eyes, structure of nostrils and  ear pinnae and thickly  distributed hairs on body are  seen in animals whereas  similarities in characters like  leaf shape, leaf venation, leaf  petiole, etc. occur in case of  plants. This indicates that there  are some similarities in those  groups and hence it proves that  their origin must be same and  must have common ancestors.

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