Mating

Another vertebrate that lives in the tundra is the polar bear. Polar bears can be found in northern areas of Canada, Alaska, Russia, and Norway. They are also located in various parts of Greenland. Polar bears are among the largest land mammals on earth. Males can weigh between 700-1400 pounds and stand between 8-10 feet tall. Females only weigh about 350-700 pounds. Polar bears appear to have a white coat, however, their hairs are really translucent and clear. The skin of the polar bear is…

for the females during the mating season, which is only a month or two long. A 2007 study by Kappeler and Schäffler found that infanticide by roaming males was a common reproductive strategy to take over groups and find mates. Each group, although female predominant, had a male that was dominant as well. He could be identified with a large chest gland and elevated testosterone levels compared to the other males in the group during mating season. The polyandrous mating system of the Sifaka can be…

Mutation in the silencing gene SIR4 can delay aging in S. cerevisiae Gene mutations that affect silencing at HM loci, telomeres and other regions of the chromosome have been shown to relate to stress resistance and aging in Saccharomyces cerevisiae. S. cerevisiae is a species of yeast in which goes through asymmetrical cellular division. Its lifespan is measured by the number of cellular divisions the mother cell is able to complete before death. In the research study by Kennedy et al, the…

I feel that, Disney’s Beauty and the Beast can be seen as a very genuine and accurate depiction of the societies stereotypes about courtship and mating. The male characters in the film/story embody all typical masculine characters (both negative and positive), in terms of chivalry, strength, urge to protect women, need for control and power. However, the theme of “unworthy of love” also seems prominent in the story, this spins stereotypes because it is the beast that is protected and sheltered,…

Transcript Transcript of American Alligator (Alligator mississippiens) SCIN 130 Power Point presentation by Serena L. Sobolewski Introduction: The organism that I have chosen for this assignment is an animal, of the crocodilian family, called the American Alligator. The scientific name is Alligator mississipiens In Spanish it is is called El Legarto, meaning the lizard. The habitat preferred by the American Alligator is fresh water swamps, marshes, rivers, lakes, and occasionally smaller…

form of incest taboos (prohibition of mating between relatives). The sexual relation between parent and child and sister and brother is not allowed. In these societies they avoid mating between close kin groups because they produce the offspring who is very weak, lean and genetically harmful. The group with incest taboo has more surviving children than the group with non incest taboo, because incest taboo groups provide healthy offspring. They even avoid mating between familiarity groups,…

Why Nonhuman Primates Engage in Infanticide When anthropologists began to study infanticide, it was seen only as abnormal and counterproductive behaviour. Anthropologists could not discover any positive reasons for primates to engage in infanticide. This is partly due to the fact that infanticide is seen as criminal and deviant in human society. A second reason was due to a lack of evidence and insufficient research done about infanticide. Initially, infanticide was considered bizarre because…

male hornbills. On the contrary, female hornbills number must be considerably less than the total number of males. According to Kozlowski et. al. (2015) family Bucerotidae species are monogamous. Therefore, by having more females than males, after mating choice we will end up with lone male individuals. In this scenario, the dependent variable is determined by female hornbills’ choosiness. Male and females individuals have to be left in an environment with similar conditions as their habitat.…

is what plays a vital role in his becoming man. The reader sees Enkidu losing his touch with the wilderness when it states, “The two of them made love together. Enkidu forgot the hills where he was born. Six days and seven nights Enkidu was hard, mating with the [love priestess]” (pg 91). In the wilderness animals don’t…

“The courtship is begun by the partner by sniffing, circling and licking each other. Finally, the male okapi asserts its dominance by tossing its head while extending its neck, and by thrusting one leg forward... After mating, the male and the female part their ways” (animalspot). They have a reproduction period of approximately 14 -15 months and give birth to a single infant at a time. They only have a life expectancy of about 25-30 years in captivity, but in the wild…