منابع مشابه
Live birth in a new lineage.
SCIENCE sciencemag.org P H O T O : R O G E R J . B IC K & B R IA N J . P O IN D E X T E R / U T -H O U S T O N M E D IC A L S C H O O L / S C IE N C E S O U R C E Fountain, which approaches the theoretical maximum for information stored per nucleotide. They demonstrated efficient encoding of information—including a full computer operating system—into DNA that could be retrieved at scale after m...
متن کاملBirth of a live fetus in twin pregnancy with hydatidiform mole and co-existent a live fetus: case report
Background: Twin pregnancy consist a healthy fetus, and hydatidium molar pregnancy is unusual and very rare. Its incidence is in about 1,22,000 to 1,100,000 of all pregnancies. This type of pregnancy is commonly associated with several obstetric complications requiring early termination of pregnancy. Managing a twin mole pregnancy with normal and live fetuses is controversial, although this unu...
متن کاملParthenogenesis: Birth of a New Lineage or Reproductive Accident?
Parthenogenesis - the ability to produce offspring from unfertilized eggs - is widespread among invertebrates and now increasingly found in normally sexual vertebrates. Are these cases reproductive errors or could they be a first step in the emergence of new parthenogenetic lineages?
متن کاملLIVE: A Lineage-Supported Versioned DBMS
This paper presents LIVE, a complete DBMS designed for applications with many stored derived relations, and with a need for simple versioning capabilities when base data is modified. Target applications include, for example, scientific data management and data integration. A key feature of LIVE is the use of lineage (provenance) to support modifications and versioning in this environment. In ou...
متن کاملLive birth in an archosauromorph reptile
Live birth has evolved many times independently in vertebrates, such as mammals and diverse groups of lizards and snakes. However, live birth is unknown in the major clade Archosauromorpha, a group that first evolved some 260 million years ago and is represented today by birds and crocodilians. Here we report the discovery of a pregnant long-necked marine reptile (Dinocephalosaurus) from the Mi...
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ژورنال
عنوان ژورنال: Science
سال: 2017
ISSN: 0036-8075,1095-9203
DOI: 10.1126/science.355.6328.921-e