Large butterfly-like insects known as Kalligrammatid lacewings, which fluttered through Eurasian fern- and cycad-filled woodland during the Mesozoic Era, have been extinct for more than 120 million years. But with new fossil ...
Plants & Animals
Feb 3, 2016
0
4837
After more than a century of study, mysteries still remain about the process of meiosis -- a special type of cell division that helps insure genetic diversity in sexually-reproducing organisms. Now, researchers at Stowers ...
Cell & Microbiology
Nov 1, 2011
0
0
Small bivalved crustacean ostracods are the most abundant fossil arthropods since the Ordovician and play an important role in paleoenvironmental reconstruction and evolutionary biology.
Archaeology
Sep 15, 2020
1
616
Scientists have taken a step closer to solving one of life's mysteries – why family size generally falls as societies become richer.
Evolution
Aug 28, 2012
7
2
Evolution works in mysterious ways, especially when it comes to sex.
Plants & Animals
May 24, 2017
1
315
There are huge differences in species numbers among the major branches of the tree of life. Some groups of organisms have many species, while others have few. For example, animals, plants and fungi each have over 100,000 ...
Evolution
Jul 29, 2021
2
346
Plants which used to have two types of male reproductive organs – to increase their chances for fertilisation – are reverting back to one type. And in some cases, they are becoming self-fertilising.
Plants & Animals
Jul 14, 2014
0
0
In many animal species, the chromosomes differ between the sexes. The male has a Y chromosome. In some animals, however, for example birds, it is the other way round. In birds, the females have their own sex chromosome, the ...
Biotechnology
Jun 4, 2015
0
42
(Phys.org)—A female cichlid hybrid fish has been observed to have grown male reproductive organs, impregnate itself and then to have offspring, a team of researchers in the U.K. are reporting in a paper published in the ...
Suppose you were trying to design a vaccine to combat next season's influenza virus. Having a detailed map that tells you exactly how various strains of the flu bug will evolve would be extremely helpful.
Evolution
Apr 14, 2016
0
20
