Many of our most valuable fruits, although consisting in a homological sense of widely different organs, are either quite sterile, or produce extremely few seeds.
In general, then, homological characters are more valuable for classificatory purposes because they have a longer pedigree than analogical characters, which represent recent acquirements of the race.
Its ossification from a separate centre in mammals has therefore a homological significance.
They laid great store by homological resemblances, and dismissed analogies of structure as of little interest.
Owen pointed out that it was necessary to distinguish between centres of ossification which were teleological in import and such as were purely indicative of homological relationships.
In paragraph 7, on affinities and classification, Darwin points out that on the theory of evolution homological relationship would be real relationship, and the natural system would really be genealogical.
The natural system of classification is based upon a proper appreciation of the distinction between homological and analogical characters.
Irregularities in the circulating system are far from uncommon, and sometimes illustrate this homological tendency.
It remains now to consider what are the evidences in support of the existence of an internal power, by the action of which these homological manifestations are evolved.
For an enumeration of the more obvious homological relationships see Ann.
Mr. Darwin recognizes[177] these homological relations, and does "not doubt that they may be mastered more or less completely by Natural Selection.
I have in this abstract treated the metamorphoses at greater length than I should otherwise have done, on account of the great importance of arriving at a correct homological interpretation of the different parts of the mature animal.
The position of the tendrils alone suffices to show their homological nature.
And it is young petioles and tendrils, whatever their homological nature may be, which move on being touched.
De Candolle believes that the tendrils differ in their homological nature in two of the tribes.
The homological nature, however, of a tendril seems to make no difference in its action.
This would be an excellent scheme; but I observe that botanists are by no means unanimous on the homological nature of certain tendrils.
In the specimens examined by me all the tendrils were certainly foliar, and it is hardly credible that the same plant should produce tendrils of a widely different homological nature.
We have seen in the first chapter that the homological structure of man, his embryological development and the rudiments which he still retains, all declare in the plainest manner that he is descended from some lower form.
His body is constructed on the same homological plan as that of other mammals, independently of the uses to which the several parts may be put.
The homological construction of the whole frame in the members of the same class is intelligible, if we admit their descent from a common progenitor, together with their subsequent adaptation to diversified conditions.
It is on this ground, and from the several points of homological resemblance incidentally mentioned in the last few paragraphs, that, in the early part of this Introduction (p.
At first it appeared hopelessly difficult to identify, in a homological sense, these six valves, with those of ordinary cirripedes, but the difficulty soon quite vanished.
They are therefore of the same homological nature as stems; and the three following cases may be added to the twenty previously given cases.
With the Gramineae the part which first rises above the ground has been called by some authors the pileole; and various views have been expressed on its homological nature.
But in most of such cases of these apparently so closely similar organs, some important homological difference may be detected.
Several eminent physiologists have discussed the homological nature of these appendages or tentacles, that is, whether they ought to be considered as hairs (trichomes) or prolongations of the leaf.
Roridula, perhaps, shows us how we may reconcile these difficulties with respect to the homological nature of the tentacles.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "homological" in a variety of sentences. We hope that you will now be able to make sentences using this word.
