what is the difference between analogous and homologous?
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Similar traits can be either homologous or analogous. Homologous structures share a similar embryonic origin; analogous organs have a similar function. For example, the bones in the front flipper of a whale are homologous to the bones in the human arm. These structures are not analogous.
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The key difference between similarity and identity in sequence alignment is that similarity is the likeness (resemblance) between two sequences in comparison while identity is the number of characters that match exactly between two different sequences.
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It might be that they are spelled similarly, they are pronounced almost identically or they have multiple meanings according to the phrase or American/British context in which they are used. But all these similarities are actually defined in the English grammar as homonyms, homophones and homographs.
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Homologous structures are structures that are similar in related organisms because they were inherited from a common ancestor. ... The forelimbs of all mammals have the same basic bone structure. Analogous structures are structures that are similar in unrelated organisms.
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The two chromosomes in a homologous pair are very similar to one another and have the same size and shape. Most importantly, they carry the same type of genetic information: that is, they have the same genes in the same locations.
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['The members of the homologous series have same functional group.', 'Members have the same general formula.', 'Members have the almost same chemical properties due to same functional group.', 'Members have common general method of preparation.']
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Two proteins are homologous if they have a common ancestor, whatever their sequences, structures, or functions.
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Summary. Multiple types of evidence support the theory of evolution: Homologous structures provide evidence for common ancestry, while analogous structures show that similar selective pressures can produce similar adaptations (beneficial features).
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Homologous structures share a similar embryonic origin; analogous organs have a similar function. For example, the bones in the front flipper of a whale are homologous to the bones in the human arm. These structures are not analogous. The wings of a butterfly and the wings of a bird are analogous but not homologous.
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Analogous organs are defined as the organs of different animals that are having different structure but perform the same functions. Example of analogous organ is the wings of insect and the wings of the bird.
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Homozygous : Having the same allele at the same locus on both members of a pair of homologous chromosomes. Homologous chromosomes also refers to a genotype consisting of two identica... ... Homologous chromosomes also refers to a genotype consisting of two identical alleles of a gene for a particular trait.
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As for words with similarities, they're known as synonyms. Antonyms, however, are words that have opposite meanings. ... Homonyms are words that are pronounced and spelled the same, although they have different meanings. Let's dive into an array of examples of antonyms, synonyms, and homonyms.
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Homozygous — Differences & Similarities. Homozygous means two copies of the same allele, such as two dominant alleles. Heterozygous means one of each type of allele, one dominant and one recessive.
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Evidence for evolution is provided by homologous structures. These are structures shared by related organisms that were inherited from a common ancestor. Other evidence is provided by analogous structures. These are structures that unrelated organisms share because they evolved for the same function.
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Image modified from "Karyotype," by the National Institutes of Health (public domain). The two chromosomes in a homologous pair are very similar to one another and have the same size and shape. Most importantly, they carry the same type of genetic information: that is, they have the same genes in the same locations.
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Heterozygous vs. Homozygous — Differences & Similarities. Homozygous means two copies of the same allele, such as two dominant alleles. Heterozygous means one of each type of allele, one dominant and one recessive.
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having the same or a similar relation; corresponding, as in relative position or structure. corresponding in structure and in origin, but not necessarily in function: The wing of a bird and the foreleg of a horse are homologous. having the same alleles or genes in the same order of arrangement: homologous chromosomes.