Texto del Guión Gráfico
- (Name P: 3) 1:Population
- 2: Genetic Variation
- 2: Overproduction of Offspring
- seals are very populated in the Alaskan glaciers. Their different color furs show natural variation in the population. Their home also features predators such as polar bears or whales. The glaciers can get extremely snowy in the winter and sunny in the spring season.
- 4: Competition & Natural Selection
- Genetic variation gives all the seals notably different characteristics. The main one is their skin color, some are very dark, some are light brown and others are snowy white. Genetic variation is the genes creating different individuals in the same population.
- 5: Adaptation
- Kicking off the winter season, many new baby seals are born in various amounts of colors. However it's alarming how many new seals are born aka, overpopulation. Shelter, safety and especially food will become scarce.
- Evolution Has Occured
- The darker skin seals are easier for its predator, the polar bear, to hunt. The seals with the lighter skin can hide easier and the white seals can almost camouflage in the snow. It's natural selection where the best suited for the snowy environment will survive and reproduce comfortably.
- White skin seals were more likely to survive and create more offspring than any other. After various years of natural selection, this left most of the population of the new generation to be white seals. The offspring now carry the heritable trait of white skin ,making it easier to adapt and survive in their environment.
- Evolution can happen quickly or slowly in an environment depending on the size of change and genetics in population. The genetic differences can include a short/long tail, light/dark fur, short/long back legs, big/small ears etc. In this environment specifically, the dominant genetic trait is white skin. The environment of the snowy ice gives a sort of layout to whom can adapt , survive and create offspring.
Más de 30 millones de guiones gráficos creados