Our Common Insects Alpheus Spring Packard 30 İndirim — Alpheus Spring Packard

Alpheus Spring Packard tarafından kaleme alınan Our Common Insects Platanus Publishing eseri olarak okurlarla buluşuyor Our Common Insects Alpheus Spring Packard Kitap Özeti Another instance which may be cited is the asymmetrical condition of the heads of the flat fishes Pleuronectidæ such as the sole the flounder the brill the turbot c In all these fishes the two eyes which in the young are situated as usual one on each side come to be placed in the adult both on the same side of the head If this condition had appeared at once if in the hypothetically fortunate common ancestor of these fishes an eye had suddenly become thus transferred then the perpetuation of such a transformation by the action of Natural Selection is conceivable enough Such sudden changes however are not those favoured by the Darwinian theor y and indeed the accidental occurrence of such a spontaneous transformation is hardly conceivable But if this is not so if the transit was gradual then how such transit of one eye a minute fraction of the journey towards the other side of the head could benefit the individual is indeed far from clear It seems even that such an incipient transformation must rather have been injurious Another point with regard to these flat fishes is that they appear to be in all probability of recent origin Yayınevi Platanus Publishing Yazar Alpheus Spring Packard Sayfa 289 Sayfa Kağıt 2 Hamur Boyut 14 00x21 00 cm Basım Yılı Temmuz 2020 Barkod 9786257078900 Kategori Bilim Mühendislik Yabancı Dilde Kitaplar Diğer Bilim ve Mühendislik