The evolutionary history of siphonophore tentilla: Novelties, convergence, and integration
نویسندگان
چکیده
منابع مشابه
Evolutionary novelties
How novel traits arise in organisms has long been a major problem in biology. Indeed, the sharpest critiques of Darwin's theory of evolution by natural selection often centered on explaining how novel body parts arose. In his response to The Origin of Species, St. George J. Mivart challenged Darwin to explain the origin of evolutionary novelties such as the mammary gland, asking if it was "conc...
متن کاملromantic education:reading william wordsworths the prelude in the light of the history of ideas
عصر روشنگری زمان شکل گیری ایده های مدرن تربیتی- آموزشی بود اما تاکید بیش از اندازه ی دوشاخه مهم فلسفی زمان یعنی عقل گرایی و حس گرایی بر دقت و وضوح، انسان عصر روشنگری را نسبت به دیگر تواناییهایش نابینا کرده و موجب به وجود آمدن افرادی تک بعدی شد که افتخارعقلانیتشان، تاکید شان بر تجربه فردی، به مبارزه طلبیدن منطق نیاکانشان وافسون زدایی شان از دنیا وتمام آنچه با حواس پنجگانه قابل درک نبوده و یا در ...
the investigation of research articles in applied linguistics: convergence and divergence in iranian elt context
چکیده ندارد.
Evolutionary novelties: the making and breaking of pleiotropic constraints.
Body plans are remarkably well conserved, but on (very) rare occasions important novelties evolve. Such novelties involve changes at the genotypic and phenotypic level affecting both developmental and adult traits. At all levels, duplications play an important role in the evolution of novelties. Mutations for duplications, including mutations for duplications of body parts, as well as mutations...
متن کاملHox cluster duplications and the opportunity for evolutionary novelties.
Hox genes play a key role in animal body plan development. These genes tend to occur in tightly linked clusters in the genome. Vertebrates and invertebrates differ in their Hox cluster number, with vertebrates having multiple clusters and invertebrates usually having only one. Recent evidence shows that vertebrate Hox clusters are structurally more constrained than invertebrate Hox clusters; th...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Integrative Organismal Biology
سال: 2021
ISSN: 2517-4843
DOI: 10.1093/iob/obab019