INTRODUCTION : Human “PKNOX” gene is a homeobox gene (1)‚ belongs to the homeobox gene family‚ involved in the regulation of development of animals. It is also known as “PREP”. They play important roles in different steps of body pattern formation during early embryogenesis of animals. Homeobox genes are generally highly conserved and control similar phenotypic characters among distantly related organisms (2). However‚ they are also responsible for controlling different phenotypic characters
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communicate ideas and to provide decorations on pottery and other manufactured items and eventually on large scale stone carvings‚ but zenith of iconography was not reached until after the invention of the spray paint can. The earliest traces of Homo sapiens are marked with cave paintings‚ reminding us of the depth of the human investment in visual expression and the range and power of symbolic communications. Symbolic communications are the things that we have given meaning to and that represent
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a.VOCABULARY Prehistory can refer to the period of human existence before the availability of those written records with which recorded history begins. Fossils are the preserved remains or traces of animals (also known as zoolites)‚ plants‚ and other organisms from the remote past. artifact or artefact is "something made or given shape by man‚ such as a tool or a work of art‚ esp an object of archaeological interest". A nomad is a member of a community of people who move from one place to
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How did the world begin? Religion or science? The ultimate question That is a tough question that every human is asked at least once in their life time. Religious groups and scientists around the world and throughout history try to answer this question. Where did the world come from? Where did this all start? Once‚ there was nothing‚ then there was god who created the world‚ but if God made the world‚ the universe and everything else‚ what made God? Where does God come from? Who made the world
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Rehan of the Los Angeles Biomedical Research Institute‚ and his colleagues‚ was of the intergenerational effects of nicotine. It was done in rats‚ but a rat’s physiology is sufficiently similar to a human’s to suspect the same thing may be true in Homo sapiens. In a nutshell‚ Dr Rehan showed that if pregnant rats are exposed to nicotine‚ not only will their offspring develop the asthma induced by this
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system we still use today. This system is known as the binomial system‚ where each species of plant and animal is given a genus name (a general name) followed by a specific name (species)‚ with both names being in Latin. For example‚ we are Homo sapiens. Homo is the genus that includes modern humans and closely-related specie. Linnaeus named over 12‚000 species of plants and animals‚ although some have had to be renamed because we know more about them now. Linnaeus
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Did humans first colonize Eritrea? Or did humanity start there? “In 1998‚ an international team of paleoanthropologists discovered a one-million-year-old skull in the Afar region of Eritrea. The remains bear traits of both the Homo Erectus and Homo sapiens‚ which pushed back the development of modern human morphology by around 300‚000 years. The team also found two pelvic fragments and two incisors recovered from ancient lake sediments. Until this discovery‚ the oldest fossils featuring human traits
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the last Ice Age. The documentary takes place 17‚000 years ago‚ and starts off by showing that North America was a vast frozen land uninhabited by humans. It focuses on a small group of people from the south of France. These people are modern Homo sapiens who are struggling to survive through the Ice Age. The group is well organized with different ranks and roles for each individual. As times get rough on this group of Solutreans with weather conditions getting worse‚ and members of the group
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In the article‚ "The Psychology of Fear‚" Dr. Gail Gross states that "Fear is a survival tactic that is built into our species." Dr. Gross goes on to state that fear originates from the fight or flight response. Dr. Gross states that "the human body’s fight or flight syndrome was meant to protect you from the dangers in your environment." (Gross1) Dr. Gail Gross‚ a Human Behavior expert‚ states that "When you are afraid‚ your body functions still operate as if you are facing a physical threat‚ and
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the New World Since the beginning the question of when the first humans reached the Americas has been an ongoing study for anthropologist and archaeologist. All agree that the one thing we are sure about is the first inhabitants were Homo Sapiens Sapiens. The question of when and how humans first entered the "New World" is still a mystery. A number of theories have been proposed however there are three leading theories which try to explain the origin of humans in the New World. The Land
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