Registrati come insegnante
Unknown Story
Testo Storyboard
- (Name P: 3) 1:Population
- 2: Genetic Variation
- 2: Overproduction of Offspring
- Grizzly Bears are very populated in the Great Smoky Mountains. Their different color furs show natural variation in the population. Their home also features predators such as people, wolves and forest fires. The forest can get extremely hot when forest fires occur.
- 4: Competition & Natural Selection
- Genetic variation gives all the bears notably different characteristics. The main one is their fur color, some are very dark, some are brown and others are snowy white. Genetic variation is the genes creating different individuals in the same population.
- 5: Adaptation
- Kicking off the summer season many grizzly bears are born in various amounts of colors. However it's alarming how many new bears are born aka, overpopulation. Shelter, safety and especially food will become scarce.
- Evolution Has Occured
- The bears with a darker fur color are less likely to be seen in the dreary forest. So, wolves begin to kill off the lighter colored bears because they are easier to spot.
- Brown and Black grizzly bears 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 brown and black grizzly bears . The offspring now carry the heritable trait of black and brown fur ,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 teeth, light/dark fur, tall/short bears, big/small legs etc. In this environment specifically, the dominant genetic trait is brown and black fur. The environment of the dreary brown forest gives a sort of layout to whom can adapt , survive and create offspring.
Oltre 40 milioni di storyboard creati
Nessun Download, Nessuna Carta di Credito e Nessun Accesso Necessario per Provare!
