Darwin's Four Postulates
Isabella S. Vela
Potential Increase in Species Numbers and Genetic Variation due to Sexual Reproduction
Offspring is genetically unique. It gets traits from both the mother and the father which makes the offspring different from the parents and therefore makes the species more diverse. For example, a child that has a mother with dark hair and green eyes and a father with light hair and blue eyes might have dark hair and blue eyes, light hair and green eyes there are many different combinations.
Red Squirrel
Genetic mutations and variations
Superb Bird of Paradise
Darwin's Four Postulates
Competition for Limited Resources and Proliferation of Organisms
The species also naturally selects the best example of the species to reproduce because they are old enough or healthy enough to survive and mate. The weak organisms in the species are either killed when they are younger or they cannot attract a mate. For example, birds of paradise dance to attract the female and the male bowerbird builds a huge structure and decorates it while giving the female gifts. The dancing is to show the female that the bird is healthy and strong. The gift-giving is to prove himself as a provider. The birds want to demonstrate their supremacy over other members of their species in order to attract a mate and that is why they are the ones that breed and have stronger children.
Bibliography
Competition. (n.d.). Retrieved April 04, 2016, from http://www.biologyreference.com/Ce-Co/Competition.html
Invasive species threat growing globally, experts warn. (2010). Retrieved April 04, 2016, from http://www.theguardian.com/environment/2010/jan/22/invasive-species-threat
Love in the Animal Kingdom. (n.d.). Retrieved April 04, 2016, from http://www.planet-science.com/categories/under-11s/our-world/2011/02/love-in-the-animal-kingdom.aspx
Superb bird of paradise part 2 | Publish with Glogster! (n.d.). Retrieved April 04, 2016, from http://www.glogster.com/17giferr/superb-bird-of-paradise-part-2/g-6lsr82i30td63t3ts2cvma0