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What is the difference between a homologous structure and a analogous structure?
Wiki User
∙ 11y ago
Homologous structures are different forms of animal anatomy which have come from the some origin (a common ancestor), these can be extremely different in appearance and function. For example a bats wing, a seals flipper and a human arm all have common bone and muscle structures suggesting that they all derived from a common ancestor.
Vestigial structures are parts of the anatomy which have lost their original function through the evolutionary process and no longer obtain a major functional role in that animals life. For example in human the appendix's original function was to break down cellulose in plant material, other vestigial functions in humans include the coccyx (tailbone) and ear muscles.
Wiki User
∙ 12y ago
Wiki User
∙ 11y agoHomologous structures derive from a common ancestor (eg. the forelimbs of birds and mammals are homologous structures). Analogous structures are the result of convergent evolution (eg. various features of the wings of birds and bats are analogous structures).
Wiki User
∙ 13y agoHomologous structures: It applies to biochemistry, physical structure, and physiology; as well as to the behavior and often, function. It is the assumption that similar structures stem from the common ancestry of all living things. Darwinists have defined homology as correspondence of structure derived from a common primitive origin; which assumes speciation to be true (from the book - Of People and Pandas).
Analogous structures: A very similar structure may not be considered homologous, although they perform the same function. Structures having a similar appearance and function in unrelated groups are said to be analogous. In other words, Darwinian mechanisms have arrived at similar solutions to the same physiological problem using very different raw material. (from the book - Of People and Pandas).
Wiki User
∙ 11y agoA Vestigial organ is a functionless or rudimentary version of a trait that has a function in a close relative.
Homologous structures are characteristics that are derived from a common ancestor. (similar strucutre, different function)
There are also analogous structures which are apparently similar (usually in function) yet phylogenetically independent.
Wiki User
∙ 12y agoHomologous structures are shared by related species and have been inherited from a common ancestor while vestigial structures are inherited form common ancestors but have lost much or all of their original function due to different selection pressures acting on the descendant.
Wiki User
∙ 9y agoHomologous structures features that two different species have in common due to common ancestors. Vestigial structure is useless features that once served a purpose but are now evolving away.
Wiki User
∙ 11y agoHomologous st. Are those st which are similer in origin and vestigial st are those st which is non essential for the organism and there is no use
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What is the difference between analogous and homologous?
Analogous means that the structures have different origins, but they do the same things. Homologous means the opposite: that they have the same origins but are adapted to do different functions.
What is the difference between a haploid cell and diploid cell?
A diploid cell differs from haploid is that the diploid cell has homologous chromosomes as when the haploid cell doesn't have homologous chromosomes.
Difference between vascular and non vascular?
The difference between vascular and non-vascular is that vascular have a tube like structure and non vascular do no have a tube like structure
Difference between indo and exo skeleton?
Endoskeleton is an interior skeletal structure. Exoskeleton is an exterior skeletal structure.
What is the exchange of genes between homologous pairs of chromosomes?
homologous chromosomes exchange alleles during crossing over.
What is the difference between vestigial homologous and analogous?
pickles :3
What is the difference between homologous analogous and vestigial structures?
pickles :3
What are the difference between homologous organ and analogous organ?
Homologous organs have similar embryonic origin and basic structure whereas Analogous organs have different embryonic origin and basic structure. Homologous organs may look different and may perform different function; e.g., forelimb of a man and flipper of a whale. Whereas Analogous organs look alike and perform same functions; e.g., Wings of birds and insects.
What is the difference between homologous structures and analogous structures?
Homologous = same origin, different function (arms vs. wings) Analogous = same function, different origin (panda thumb)
Are similarities between sharks and dolphins homologous or analogous?
analogous
Distinguish between homologous structures and analogous structures?
Homologous structures have the internal structure, but different functions. For example the human arm, horse foreleg, bird wing, and whale flipper have similar internal skeletal structure, but different external structure because of their different functions. Analogous structures have similar external structure because of similar functions, but dissimilar internal structure. An example of analogous structures would be the wings of an insect and a bird.
What is the difference between morphological divergence and homologous structure?
Morphological divergence is a process resulting in homologous structures.
What is the relationship between homologous structure and analogous structure?
Homologous structures refer to structures on different species that are similar in function and their evolutionary origin. Analogous structures are similar in function but do not share a similarity in evolutionary origin.
How do analogous structures and homologous structures differ?
Homologous features of animals are a lot more recent in contrast to evolution, where as analogous dates far back. Homologous features are similar in structure, but perform different functions, such as the human hands and dolphin flippers, which makes room to allow recent evolution comparisons while analogous consists of wings of a bee and a bird, which are completely different. When trying to determine evolutionary relationship between two species, biologists concentrate on homologous features, as analogous features would be considered useless in this case.
How do you tell the difference between a homologous serious and an isomer?
describe a chemical test you would use to show the difference between an isomer and a homologous series
Homologous structure between birds and dolphin?
they live for a while
Two species have homologous structures what do these homologous strcutures show about the evolutionary relationship between the two species?
The presence of homologous structures (for example, the bone structure in chimpanzee arms, human arms, and whale flippers) indicates that the species sharing that homologous structure share a common ancestor.
