The boy resembles Mom, the girl resembles pa, it is random merely the result that sampling deviation and selective attention create. Do not have the evidence on genetics. But all child do not divide a men and women, in childhood period more resemble father, have certain statistical evidence, more important is to be in tradition of almost all culture, all mother square relative, metropolis so say.
The scientist has defeated interpret a lot of colour value gene.Legal medical expert is interested in decide the gene of appearance most, if can connect the bloodstain that analyses guilty spot bequeath too, seminal, hair,medium DNA can know the appearance of this person roughly, this commits a crime to capturing for the suspect, it is revolutionary progress simply. Accordingly, in this domain, have the appearance that much research was analysing what gene to decide us, current, we had discovered more than 10 gene and appearance perhaps say Yan Zhi is concerned. Of course, know these gene decide Yan Zhi, with the basis the permutation of these gene is combined, give appearance to come with respect to the picture, still road of one end length wants, let us understand first now below, what does colour value gene have.
2016, nature was publishing a paper on print, after old research, scientist discovery
DCHS2, RUNX2, GLI3, the Yan Zhi that the gene such as PAX1 And EDAR decided people roughly (genetic force 60%~80% ) , of course the scientist does not say Yan Zhi, what they say these gene is aberrant the difference that decided appearance.
These gene can affect 14 crucial and facial features.
Facial bottom feature: Chin appearance, prognathous, go up / labium ply;
The face is mid feature: Zygomatic and outstanding degree, nose root width, bridge of the nose and nose ala, nose column bend is spent, before bazoo dash forward, nose outline and bazoo are pointed
: of facial upside feature? Does ability employ bank of bosom dirty decadent to wash cast ?
If the appearance of the boy or girl is followed mother or along with father, decide by true genetic process place, that the most likely genetic mechanism has below two kinds of possibility.
Because Yan Zhiji stays on X chromosome mostly, this calls sex-linkage.
Yan Zhiji because " know " oneself come from agnate still come from a mother square, have expression optionally according to the circumstance. This calls gene impress on genetics.
Sex-linkage:
Because decide chromosome of a pair of sexes XY, among them X chromosome can come from a mother only, because Y chromosome must be offerred by father. So if majority colour is worth gene to be located in X chromosome,go up, that boy is gotten with respect to chairman more like the mother, can call Yan Zhi's sex-linkage. But regretful is, because the Yan Zhiji of current discovery is not in on X chromosome. So, the boy resembles Mom cannot by sex-linkage mechanism gets explanatory.
Gene impress:
The gene on euchromosome is geminate and didymous appear, among them one comes from a mother, another comes from father. Below great majority circumstance, these two gene want be dominance to be able to be conveyed only, affect embryonic growth, this is why some kind of confluence that we always are parental features it seems that. But have few number gene, cellular Fang Buddha knows their origin, have alternative expression thereby, convey father or maternal gene merely. This among them the most important discovery is, the gene that comes from father is controlling placental growth, and the gene that comes from a mother, control the growth of our cerebra. Of course, it is OK to be returned in cerebrum fractionize, this is a rough view only. If we and small rat share the basic mechanism of cerebrum development, so our intelligence and rational main origin decide from gene place of the mother. Although we do not have law choose and employ persons to do embryology test, but we are OK from statistical go up observation, whether do those clever men have a clever Mom, and father is clever not matter, can know whether this one law is efficient on human body roughly.
Although at present we discover colour value gene, also not be impress gene, they won't have alternative expression in embryo. But resemble dad in childhood period in view of most child, this one phenomenon, we can be made conclude, certain the decides childhood period appearance gene that has not discover, probable it is impress gene, they are conveyed from the gene that comes from father only, pass the similar sex of appearance, let father can decide this is this child, lest extremely suspicious.
For instance, the similar sex that childhood of father and son takes, let a person do not need to do close child appraisal, also know this affirmation is his child. This raises child to raising father to participate in is very a necessary sth capable of comforting sb, what because this gets,choose naturally is intense look at in person no wonder also. Cause most child to resemble dad from this, as to from this kind of case that divides a boy to resemble Mom among them, I dare not say to need to do close child appraisal, but let a person set his mind at hard at least.
