A planter here and there may have exerted a control of matings in the interest of industrial and commercial eugenics, but it is extremely doubtful that any appreciable number of masters attempted any direct hastening of slave increase.
None of the matings or paternities appear in the record, though the christenings and the slave godparents are registered.
If the eggs are infertile, the trouble is likely with the cock and the matings should be broken and two birds tried again.
In a loft containing fifty young cocks and fifty young hens it almost always happens that the matings are not all made up, as some birds refuse to mate with certain other ones, and there may be a few birds which have not mated.
As a rule about a month of this treatment will suffice to bring about the new matings desired and the birds can then be allowed to range at liberty.
Since the drakes do not fight seriously, flock matings can be made.
Where new matings are to be made or where changes are to be made this should be done in the fall so that the birds will have been mated for several months before the breeding season begins in order to insure good results.
As a rule, matings once made are permanent from year to year unless changed by the breeder on account of poor results.
In fact, it is considered a pretty good proportion if one half of the ducks hatched have crests although the matings vary considerably in this, occasionally one producing practically 100% of the offspring with crests.
Matings are not, therefore, changed from year to year as a rule so long as they continue to give satisfactory results.
The young ducks when hatched are yellow or creamy blue and from blue matings there are also produced black and white ducklings.
In each of these instances, these matings do not represent as much maturity of judgment as there would have been in times of peace, and hence give a less desirable sexual selection.
Even if the information it furnishes were more complete, human genealogy would not justify the claims sometimes made for it as a science, because, to use a biological phrase, "the matings are not controlled.
Much more progress in the study of heredity must be made before advice on marriage matingscan be given in any except fairly obvious cases.
All matings so far studied have been between an affected person and a normal.
To this extent, then, flowers are peculiarly exclusive in their matings and promiscuity occurs in the vast number of cases only in plants of the same species.
And let no one resent or think useless such an analogy between animal love-matings and our own.
As animals exhibit in their love-matings the analogies of the human virtue, it is not surprising to find the occurrence of parallel vices.
The fact that the two forms, laeta and velutina, are produced by many matings in which Lamarckiana and its mutant rubrinervis are used as males is confirmed abundantly by Honing, who has carried out extensive researches on the subject.
The results of the subsequent matings can also be readily interpreted on the same lines.
I am inclined to believe that in nature matings between brothers and sisters are frequent in many species of animals, and that the production of sporadically varying colonies is thus greatly assisted.
Here, all matings where both of the parents were "tainted" are classified.
The sixth type is normal x normal, and the matings where both parents were reported normal is studied under this heading.
From the matings where one parent was epileptic or feeble-minded and the other alcoholic, there were 61% mentally deficient or nulliplex, the remainder simplex.
For the third type, nulliplex by normal, all those matings where one parent was epileptic or feeble-minded and the other reported as mentally normal are classified.
A special study of the matings where one or both of the parents was migrainous or alcoholic, shows a close relationship between these conditions and epilepsy.
The matings where one parent was tainted and the other supposedly normal, are classified here.
Under the first type all those matings where both parents were epileptic, one was epileptic and the other feeble-minded, or both were feeble-minded, are classified.
The figures for the offspring from the other matings showed 47% nulliplex, and 53% simplex.
Now Old Miss had a favourite project or projects, and that was matings between Coltsworths and Ashendynes.
Every few years for perhaps two centuries such matings had occurred.
Many of these matings lasted and the offspring were absorbed without social embarrassment in the life of the community.
Almost all of the first settlers were squaw men and the matings were tolerated because they were understood.
The matings too, taking place in the grass and air; the matings of the two streams, the two grains of sand; the matings of butterflies, birds and bees.
The families resulting from such matings were precisely the same as those from lacticolor males and F1 females, viz.
At any rate the pedigree illustrates the unfit character of the matings with affected persons, for in no instance has such a marriage resulted in the production of fewer than one half affected offspring.
More vigorously and more unmistakably does the Eugenist discourage anything that leads to matings of the unfit and, above all, to their reproduction.
This history is less satisfactory because the matings are given in only three instances.
Human beings are frequently rational creatures; placing before them clear and truthful ideas regarding fit and unfitmatings cannot fail of an ultimate effect.
Here again we have a defect whose inheritance follows quite closely the Mendelian formula, although the character of the matings is not fully known; it is unnecessary to describe the details--the histories speak for themselves.
In generations II-V matings between normal and affected gave 42 affected and 35 unaffected offspring.
It is instructive to compare here the progeny of matings of different kinds.
Although the matings were with normals in every case, yet in four of the eight marriages all of the offspring were affected.
It is only the fairest, the highest and fullest matings that do not rob the soul of this, even when it is an old tried joy.
A profound influence toward checking this malady would evidently be exerted if the matings on the family lines exhibiting the characteristic of susceptibility were to cease, and thus the perpetuation of susceptible types checked.
Nor is Eugenics the science of improving the human stock by matings that are academically ideal, but which lack the element of individual attraction and instinctive love.
It had become the life-theme--to bring a breath from the open splendour of the future to the matings of men and women.
Their matings are makeshifts; their brief honeymoons are matters from which the finer world turns its eyes.
But surely," I said, "eugenics has more than remedied this defect of socialism, for the selection of men of superior mentality is much more rigid than it could have been under the capriciousmatings of capitalistic society.
The females from the last matings breed to a medium seal brindle dog with a very glossy coat, and the result of these last matings will be good seal brindles.
The pups from these matings will come practically seventy-five per cent.
Many who do not understand scientific matings to obtain these desirable colors have fallen into a very natural mistake in so doing.
The females from these matings bred always to a dark mahogany brindle dog.
In wild land birds the pairing habit is not of advantage to a species, but still the tendency to single matings is very strong.
Interspecific matings under laboratory conditions are not uncommon and several verbal reports of such matings under natural conditions have reached me.
In the matings that I observed, the inturned first claw of the male secured a hold on the female's rump or just beneath her legs, whereas the remaining three toes gripped the edge of her plastron.
Sperm expelled from the epididymides in autumn matingsare seemingly replaced by others from the seminiferous tubules; the epididymides become much smaller when their supply of sperm is nearly exhausted after spring mating.
Ancestry of syndactyl fowl and the results of various matings involving syndactylism.
That erectness is recessive is proved by various matings of extracted erect × erect crest.
DR, and so do the hens inmatings 9 to 13, while the hens in the other 2 matings are doubtless RR's.
The application of this hypothesis to the various matings may now be attempted.
Some are probably matings of two heterozygotes, others of two recessives, and others still of a recessive with a heterozygote.
The actual result of such matings is shown in table 27.
On the other hand, there are numerous matings of 2 extracted normal-toed parents that have produced only normal-toed offspring (families Nos.
By homologous matings I mean those in which the germ-plasms of both parents are in the same condition with reference to the unit-character; i.
The guinea-pigs used in the experiment were all first tested by normal matings and found to yield normal offspring.
Since in a normal male, however, the mature reproductive cells will contain either a normal X or no X (fourth row), any one of four different kinds of matings may result.
It is evident that six kinds of gametic matings are possible among individuals representing these various formulae.
Although themselves untreated, these individuals, of which 19 matings were made, produced as many or more defective young than did their alcoholic parents.
By referring back to our tabulation of possible matings on page 100 where the dominant character is represented by the letter A, this can be seen at a glance.
It is obvious that this is near the expected percentage in the case of a dominant trait where matings of affected with normal individuals prevailed.
These matingsare as follows: Possible couplings Matings of gametes Product 1.
Since B is always dominant three out of the four matings would yield black individuals, or in other words the ratio would be 3:1.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "matings" in a variety of sentences. We hope that you will now be able to make sentences using this word.
