Allopatric speciation

Picture your earliest childhood memories and hold them in your mind. Now, from those memories, think of your favorite book. Perhaps it is the book that your parent or grandparent read to you to help you sleep, the book from which you first learned to read, or even one you still have a copy of sitting on a bookshelf in your home. Although our world has become increasingly digital, there is one thing that links Americans and Europeans, Baby Boomers, Generation X, and even Millennials, they were…

after the construction of the road, species in the wetland on the upper side of the road will not be able to breed with those in the pond if they are not able to cross the road safely. Ecological speciation may occur, which is when divergent natural selection drives reproductive isolation causing speciation. Therefore, pond animals will experience their own divergent evolution, and may become phylogenetically different species. For example, The Illinois State Threatened Blue-Spotted Salamanders…

The Strength of the Yucca-Yucca Moth Interaction: Review of Past Scientific Studies Abstract The relationship between Yucca moths from Tegeticula, Parategeticula and Prodoxous with the Yucca plant (Agavaceae) has been observed over centuries. The strength of their interaction has created contradictory theories. Whether the relationship is obligate or falcultative is one of the ideas providing differing views. The effects of external influences have also been studied by many. In this review I…

Writing Assignment #1 Lasiognathus dinema There are a couple misconceptions you might have about evolution and natural selection. The strongest and most important organisms do not survive over the generations. Although evolution occurs due to fitness in an individual or individuals of a species, an organism cannot survive over generations. Fitness is achieved through variations in populations of species through genetic differentiation (Scottville “n.d.”). Since the life cycle of all living…

Speciation is the origin of new species. Species are a group of closely related organisms. The Biological Species Concept is a group of populations whose members have the potential to interbreed in nature and produce viable, fertile offspring. Fertile means…

Geographical distribution and Karyotype of Nannospalax ehrenbergi (Rodentia, Spalacidae) in Iraq (Kurdistan Region) Zaitoon Ahmed HAMAD1, Yüksel COŞKUN2*, Alaettin KAYA2 1 Dicle University Institute of Science Biology Section, Diyarbakır /Turkey 2 Dicle University Science Faculty, Department of Biology, Diyarbakır/Turkey *Corresponding author Geographical distribution and Karyotype of Nannospalax ehrenbergi (Rodentia, Spalacidae) in Iraq (Kurdistan Region) Abstract The…

that now catered for that. For example different sized and shaped beaks that suited what food sources they have readily available to them on the island. Due to the isolation they have become their own species now unable to interbreed due to allopatric speciation. Darwin’s Finches can also rapidly adapt the size and shape of their beaks to cater for the wet and or dry conditions that cause a variation from the normal supply of food available. This variation in food is caused by the climatic…

Wind back the tape of life, Stephen Jay Gould once said, and the chance becomes vanishingly small that anything like human intelligence would grace the replay. Whether evolution can produce the same kinds of creatures more than once is a question that has been on more than one mind for a long time. Some biologists argue that evolution is a deterministic process, meaning that similar environments will tend to produce similar outcomes. Others think its course follows unpredictable twists and…

The symbiosome is a key area of research at present, it is defined as the organ which the organism produces to entrap the microbe internally* (V. Clarke et al 2014). The symbiotic relationship between plants and fungi is an essential one for benefiting fully from Mycorrhizae, which then helps the land plants absorb the essential nutrients such as phosphorus and nitrogen. The interaction between plants and microbes allows for essential functions of the plants such as growth, germination and…