This process of consolidation tends to limit the evolutionary potential of the species as a whole (Waples). This effect can be compounded by outbreeding depression in offspring, wherein the progeny from two distant individuals exhibit lower fitness in the parental environment than either of their parents…
Ecology and evolution are considered sister disciplines of the life sciences. Natural selection, life history, development, adaptation, populations, and inheritance are examples of concepts that thread equally into ecological and evolutionary theory. Fresh water ecosystems is a living community of interacting organisms and their physical environment and habitat. Freshwater ecosystems are a subset of Earth's aquatic ecosystems. Some of those aquatic ecosystems include lakes, ponds, rivers,…
on Friday in the journal Science uses life history theory to explain why tropical songbirds typically raise fewer chicks than temperate songbirds. What’s life history theory? Life history theory seeks to explain the ways in which natural selection works to determine a given organism’s anatomy and behaviors. Life history theory suggests that reproductive tendencies, or “life history strategies,” are part of a complex system of species traits, or “life history characteristics.” Parent organisms…
Essentialism Perspective on Promiscuity and the Societal Repercussions Throughout western history, there has been one main belief that has prevailed regarding men and women’s sexuality: that sexual motivation is influenced by the physiological differences between the sexes and accounts for their variances in behavior. This essentialism approach to sexuality, developed with the advancement of evolutionary psychology, which states that all living things maintain a fixed biological,…
events in order to gain a holistic understanding of their life and culture. The chapter mentions that Malinowski is responsible for developing the method of participate observation. Although some anthropologist such as Tedlock suggests that Malinowski simply made the fieldwork method into a theory. Moreover, this chapter explores other ethnographers who practiced participant observation by living in the communities, taking part in daily life, conversing and recording their observations. I found…
average person but Stephen Jay Gould is a widely known and read 20th century scientist. Some even consider him to be the on the same level as Charles Darwin. Charles Darwin spent most of his life researching and trying to prove his theories. He wasn’t out for fame or fortune but knowledge. Many different aspects of life force people to thrive for something more. Some people stand for those occasions while others keep their heads down trying not cause trouble. Darwin and Gould are men who didn’t…
in Jamaica can be seen throughout history. These relationship betweens these groups and others in the Caribbean shapes the Caribbean we know today. These experiences can be seen through the difference and similarities between indenturement vs. slavery and the concept of the Cultural Evolutionary Model. The Pagoda by Patricia Powell and Lisa Yun and Verena Shepard depict the similarities and differences between these groups’ experience. The Cultural Evolutionary…
sprouted from a common ancestor and through several adaptations became the hundreds of thousands of species we have today. The reasons these adaptations happen is by a process called natural selection. natural selection is the process by which random evolutionary…
Ground squirrels are among the most intensively studied groups of mammals (Harrison et al, 2003) and generally classic subjects for research on variations in life-history traits and population dynamics (Hoffmann, 2002; Miche ner, 1998; Oli et al, 2001). They are small- to medium-sized animals that spend much of their lives in extensive burrow systems (Nowak, 1991; O¨ zkurt et al., 2005) and are obligate hibernators during seasons with low ambient temperatures and poor foraging conditions…
years to form. Also, that life on the planet has come about by the process of evolution, as proposed by Charles Darwin. Scientists study the results of old processes in the present and try to reconstruct…