What is human?5 answersHuman beings are complex creatures with a rich history of evolution and diverse perspectives on their nature. They are characterized by their erect stature, clothing, cultural development, and continuous self-improvement. Throughout history, various philosophical, religious, and scientific perspectives have attempted to define what it means to be human, exploring aspects such as behavior, gender, biological influences, aspirations, and the intersection of science and ethics. The relationship between humans and the environment, as well as their role within the Earth's Biosystem, highlights the interconnectedness and competition inherent in their existence. Additionally, contemporary issues like artificial intelligence and robotics challenge traditional notions of humanity, raising ethical questions about the boundaries between humans and machines.
History and origin of rabbit?4 answersRabbits have a complex history and origin. The common belief that rabbits were domesticated by French monks in AD600 is a misconception. The inability to accurately date domestication is due to methodological biases and a lack of understanding of domestication as a continuum. Rabbits are mammals from the family Leporidae and were originally wild animals found in Africa and Europe. They were later classified in the order Lagomorpha, which includes rabbits and hares. All domestic rabbit varieties used in biomedical research were developed from the European rabbit, Oryctolagus cuniculus, which possesses traits that make it an appealing research model. Genetic studies have shown that present populations of rabbits are organized into two groups, with domestic breeds belonging to one group that originated from Spain and was introduced to France by humans. The introduction of rabbits to Mediterranean islands, such as Zembra, was likely done by Bronze Age or Roman people, and the rabbits on Zembra in late Roman times belonged to the same lineage as present populations from Northern Spain and Southern France.
Rabbit useful model for human research?5 answersRabbits are a useful model for human research due to their similarities in brain development and neuroanatomical features, making them an alternate animal model for studying neurological diseases. Additionally, rabbits have unique features such as a lipid metabolism system similar to humans and medium body size, which facilitate handling and experimental manipulation. The recent advent of gene editing tools has allowed for the production of gene targeted transgenic rabbits, offering unique opportunities in translational biomedical research. These gene edited rabbit models have been found to mimic several disease pathologies better than mouse models, particularly in genetically inherited diseases, cardiovascular diseases, and ocular diseases. Therefore, rabbits can provide valuable insights into human diseases and support the development of novel therapeutics.
What are birds?5 answersBirds are a group of endothermic vertebrates that have feathers, toothless beaked jaws, lay hard-shelled eggs, have four-chambered hearts, and possess a strong but lightweight skeleton. They range in size from the smallest bee hummingbird to the largest ostrich and are found all around the world. Birds evolved from theropod dinosaurs during the Jurassic period and gradually developed their small, lightweight, feathered, and winged body plan over millions of years. After the mass extinction event at the end of the Cretaceous period, modern birds explosively diversified and now there are over 10,000 species of birds distributed worldwide. Molecular and morphological studies support the division of living birds into three monophyletic groups: Palaeognathae, Galloanserae, and Neoaves. Avian mitotic chromosomes can be obtained from various tissues, and cytogenetics is a useful tool in bird cytotaxonomy. Birds have a small amount of repetitive DNA in their genomes compared to other tetrapods.
What is chicken?4 answersChicken refers to domestic birds that are mainly kept for the production of meat and eggs for human consumption. Chickens are the most important species among domestic birds and are adapted to various climatic conditions globally. They play a significant role in supplying animal-origin protein to improve human nutrition. Chickens have been successfully domesticated and are widely raised in both large-scale and small-scale production systems. They are an important resource for smallholder farmers, who raise locally adapted breeds for eggs and meat. Efforts are being made to conserve chicken genetic diversity through the use of cryopreserved embryonic chicken gonads, which can be thawed and injected into host chicken embryos to produce chicks. The chicken has also been an important experimental system for developmental biology, immunology, and microbiology, making it a valuable model organism for studying gene function during embryonic development. Poultry farming, including chicken production, has significant economic impacts and meets the demand for cheap protein sources.
What is android?4 answersAndroid is a term used to define technological equipment that allows for easy communication, information storage, and dissemination. It is a popular operating system used in smartphones and tablets, providing access to information from all over the world at relatively low costs. Android phones have various applications that can be used in different fields, including education. These applications can make learning more interactive and enjoyable, such as puzzle programs that help students learn about the layout and provinces of a country. Additionally, Android technology has been utilized to develop assistive applications for people with visual impairments, improving their visual abilities and facilitating daily activities. However, it is important to note that Android devices are also vulnerable to malware attacks, which can lead to identity theft and other security issues. Overall, Android is a versatile operating system that has revolutionized communication, education, and accessibility for individuals worldwide.