outside water. But the amphibian is still chained to water, in water it is born, to water it must periodically return for respiration. Frog is an amphibian, living both on land and in water. They are cold-blooded vertebrates having two pairs of limbs- tetrapods. Frog is cosmopolitan in distribution. Frogs were the first land animals with vocal cord. They have smooth and moist skin. Rana tigrina is the common Indian bull frog. Rana
Midwife Frog Animals are smart, and can be just as smart as humans.The midwife frog is one of those smart animals. People assume that all frogs are alike, but in all actuality, not one frog is the same. Frogs com in different shapes and sizes. The Midwife toad is one of those really smart animals, the male takes on the traits of a midwife. The midwife toad is an interesting frog. It has a different life cycle, mating process, and birthing process than other toads. Midwife toads have an astonishing
The object of “Science, Evolution and Creationism”, is to explain the principles of evolution, the significance of scientific knowledge and the role that creationism plays in it all. Scientific and technological advances have had a profound effect on the study of evolution. With these advances biologists have discovered the importance of DNA and how it is solely responsible for continuity of organisms on earth. However, without the understanding of evolution this discovery would be pointless. Scientific
A. Why was there evolutionary pressure for shell to evolve to a pen? There was evolutionary pressure for the shell to evolve into a pen for locomotion, propulsion, movement, and protective reasons. The pen can be seen in modern cuttlefish, squid and octopods. The pen was more beneficial than the shell because it is now internalized and doesn’t weigh down the organism, the organism is now able to float horizontally in water and allowed the organism to develop fins for better locomotion. The loss of
One of the most extraordinary characteristics of a genome is its ability to using the same genetic framework to create different phenotypes according to environmental stimuli. Such adaptive ability is known as phenotypic plasticity which is an important feature for natural selection (West-Eberhard, 2003). Not surprisingly, unravel how the same genome produces different forms, states or metabolisms according to the environment is a difficult task, but perhaps one of the most rewarding for those who
research centered around how the world and species developed to the way we know them today. His basic theory was that species were not created but evolved and that the driving force in charge of evolution was natural selection. The controversial nature of his work stemmed from his departure of the idea that evolution is a result of God’s will and that God created all species. Though his claims were against the beliefs of many, his work sold out quickly and remains to this day the basis for evolutionary
Convergent Evolution Not all species similarities are due to common ancestry. Species from different evolutionary branches may come to have similar characteristics due to sharing similar ecological roles. Natural selection results in similar evolution or at least similar features. This is known as convergent evolution and resultant similarities are called analogy rather than homology. (Taylor, 1999). An example is the whale; it has a streamlined appearance similar to a fish as they evolved in the
s eye color, etc. 2. It's not specified in the movie, but theorhetically, if we understood the human genome (which is underway) we would be able to manipulate a specific strand of DNA to choose certain characteristics in our offspring. 3. As the narrator explains, he was considered a bad risk because his genetic makeup says there was a chance(!) that he would die from a heart defect before the age of 18. There are a whole variety of other problems or illnesses that could be revealed by analyzing
Manduca Caterpillar By: Shwetha S. The purpose of this experiment was to find which temperatures are best fit for manducas to live in. If manducas are tested in temperatures 20°C and 30°C then manducas in 30°C are to survive longer than the ones in 20°C because butterflies stay in North America during summer then migrate to south to warmer temperatures during winter. As the graph shows the colder climates manduca had survived longer than the 30°C. The length and mass of the latter had increased
QUOTE: “If you could throw a switch and randomly kill half the population on earth, would you do it? But what if you were told that if you didn’t throw that switch right now, the human race would be extinct in the next hundred years? Would you throw it then? Would you kill half the population today in order to save our species from extinction?” –Dan Brown Greed is part of human nature. If one is to survey every individual’s mind, the results will dismiss any hope remaining for humanity. The excessive