Toplam 15 içerik listeleniyor
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Scientists discover how 'jumping genes' help black truffles adapt to their environment
Black truffles, also known as Périgord truffles, grow in symbiosis with the roots of oak and hazelnut trees. In the world of haute cuisine, they are expensive and highly prized. In the world of epigenetics, however, the fungi (Tuber melanosporum) are of major interest for another reason: their unique pattern of DNA methylation, a biochemical process that chemically modifies nucleic acids without changing their sequence. Epigenetics is the study of changes in gene expression caused by...
https://www.biyologlar.com/scientists-discover-how-jumping-genes-help-black-truffles-adapt-to-their-environment -
New study shows parrotfish are critical to coral reef island building
As well as being a beautiful species capable of changing its colour, shape and even gender, new research published today shows that parrotfish, commonly found on healthy coral reefs, can also play a pivotal role in providing the sands necessary to build and maintain coral reef islands. The study, based on work in the Maldives and published in the journal Geology, found that parrotfish produced more than 85% of the new sand-grade sediment on the reefs around these reef islands. Reef islands...
https://www.biyologlar.com/new-study-shows-parrotfish-are-critical-to-coral-reef-island-building -
12th INTERNATIONAL CONGRESS ON THE ZOOGEOGRAPHY AND ECOLOGY OF GREECE AND ADJACENT REGIONS (12. Uluslararası Zoocoğrafya ve Ekoloji Kongresi )
Dear Colleagues, It is a great honour for the Organizing Committee, to invite any professional or student who shares our mutual interest in Zoology to the 12th International Congress on the Zoogeography and Ecology of Greece and Adjacent Regions to be held in Athens, Greece, from June 18 to 22, 2012. The congress' scope includes all issues related to the animal systematics, ecology, phylogeny, phylogeography, and population genetics in Southeastern Europe and the eastern Mediterranean region....
https://www.biyologlar.com/12th-international-congress-on-the-zoogeography-and-ecology-of-greece-and-adjacent-regions-12-uluslararasi-zoocografya-ve-ekoloji-kongresi- -
Penn bioengineers show why lab-made stem cells might fail: Errors in DNA folding
Induced pluripotent stem cells hold promise for regenerative medicine because they can, in theory, turn into any type of tissue and because they are made from a patient's own adult cells, guaranteeing compatibility. However, the technique that turns adult cells into these iPS cells is not foolproof; after reverting to their pluripotent state, these cells don't always correctly differentiate back into adult cells. Researchers from the University of Pennsylvania have now discovered one of the...
https://www.biyologlar.com/penn-bioengineers-show-why-lab-made-stem-cells-might-fail-errors-in-dna-folding -
Hybrid cells cause chaos around cancers
Rice University researchers have built a simulation to show how cancerous tumors manipulate blood-vessel growth for their own benefit. Like all cells, those in tumors need access to the body's fine network of blood vessels to bring them oxygen and carry away waste. Tumors have learned to game the process called angiogenesis in which new vessels sprout from existing ones, like branches from a tree. But some details have been hidden until now. The ability to stop tumors through...
https://www.biyologlar.com/hybrid-cells-cause-chaos-around-cancers -
Neuron unites 2 theoretical models on motion detection
As indicated by their name, photoreceptor cells in the eye respond to light: is an image point bright or dark? They do not indicate the direction of a movement.
https://www.biyologlar.com/neuron-unites-2-theoretical-models-on-motion-detection -
Discovery shows how herpes simplex virus reactivates in neurons to trigger disease
When we get cold sores, the reason is likely related to stress. In particular, the neurons in which the herpes simplex virus (HSV) reside, are under stress. For the first time, researchers at the University of North Carolina School of Medicine discovered a cellular mechanism that allows the virus to reactivate. They also found how brain cells are duped into allowing bits of virus to escape the very repressive environment in neurons and cause disease. HSV is found in about 90 percent of the...
https://www.biyologlar.com/discovery-shows-how-herpes-simplex-virus-reactivates-in-neurons-to-trigger-disease -
Honeybees pick up 'astonishing' number of pesticides via non-crop plants
Purdue researchers found that honeybees collect pollen from a wide range of plants, even in areas dominated by corn and soybeans.
https://www.biyologlar.com/honeybees-pick-up-astonishing-number-of-pesticides-via-non-crop-plants -
Honeybees pick up 'astonishing' number of pesticides via non-crop plants
Purdue researchers found that honeybees collect pollen from a wide range of plants, even in areas dominated by corn and soybeans.
https://www.biyologlar.com/honeybees-pick-up-astonishing-number-of-pesticides-via-non-crop-plants -
Apoptozun temel işlevi ve amaçları
Apoptoz (programlanmış hücre ölümü) ve sağ kalım mekanizmalarının anlaşılması, biyolojik bilimler alanında, yeni binyılın ilk yıllarından itibaren devrim niteliğinde gelişimlere yol açmıştır. Apoptoz organizmanın nükleuslu hücrelerinde genetik olarak programlanmış bir hücre ölümü şeklidir. Bu hücre ölüm şekli, hücrenin nekroz ve kompleman lizisiyle yok oluşundan farklı mekanizmalarla oluşmaktadır. Apoptozda komşu hücreler hiçbir zarar görmez....
https://www.biyologlar.com/apoptozun-temel-islevi-ve-amaclari -
Prof.Dr. Bahtiye MURSALOĞLU
1918'de Bolu'da doğan Bahtiye Hoca Hanımefendi (o zamanki adıyla Bahtiye KOLLU), ilk ve orta öğrenimi burada tamamladıktan sonra 1935'te Ankara’daki Yüksek Ziraat Enstitüsü’ne başladı. Hem ruhu, hem de bedeni spora çok yatkındı ama teniste Türkiye Şampiyonlukları alacağını, Türk sporunun en başarılı kadın sporcularından biri olacağını o yıllarda aklının ucundan bile geçiremiyordu.Ankara’da spor yapma olanakları kısıtlıydı. Ancak, Yüksek Ziraat...
https://www.biyologlar.com/prof-dr-bahtiye-mursaloglu -
Prokaryotlarda Hücre Savunması ve Evrimi: CRISPR-Cas Sistemi
Belki de mikrobiyoloji alanına yönelmiş bir öğrenci olmamdan kaynaklı, “Doğa bir savaş alanıdır.” sözü bana çayırlarda koşturan aslan ve geyiklerden çok bağışıklık sistemini hatırlatıyor.
https://www.biyologlar.com/prokaryotlarda-hucre-savunmasi-ve-evrimi-crispr-cas-sistemi -
Türkiye'de Yaşayan Engerek Türleri
Türkiye sınırları içerisinde bir çok sürüngen türünün varlığının yanı sıra çok sayıda engerek türüde de hayatlarını sürdürmektedir.
https://www.biyologlar.com/turkiyede-yasayan-engerek-turleri -
Prof. Dr. Turan GÜVEN Hocamızı kaybettik
Değerli hocamız Emekli Öğretim Üyesi Prof. Dr. Turan GÜVEN'i kaybettik. Yetiştirdiği öğrencileri onu hiç unutmayacak. Mekanın cennet olsun.
https://www.biyologlar.com/prof-dr-turan-guven-hocamizi-kaybettik -
İnsanların Daha Önce Bilinmeyen Bir Dokunma Duyusu Keşfedildi
Araştırmacılar, kıl folikülü hücrelerinin, derideki eşdeğer hücrelere göre daha yüksek oranda dokunmaya duyarlı reseptör içerdiğini buldu.
https://www.biyologlar.com/insanlarin-daha-once-bilinmeyen-bir-dokunma-duyusu-kesfedildi