Thursday, October 31, 2019

1.)
a: An example of two homologous traits consist of cats having tails bones as well as chickens having tail bones. Although they both have tail bones, the physical appearance is very distinct. While the cats tailbone is long and extends into a long tail, the chickens tail bone is cut off and does not extend.

b:A cat uses their tail to balance in order to walk on tight spaces; while chickens use their tails as a physical perception. Their tails are used to show off and dance to attract mates.


c: Mammals are generally the main ancestors of the tail bone. This is including bats and whales

2.)
a: An example of a two species with analogous traits would be plants and their ability to store energy. For example the, sweet potatoes and regular potatoes.

b:Both sweet potatoes and regular potatoes store energy in the for of starch. Although they store energy in the same way they are completely different plants. They have distinct roots as well as stems.
c: The trifida is the most common ancestor. This is a giant rageweed in which is also in the sunflower family and the plant family. This plant way be known as a ragweed, giant ragweed, blood ragweed, etc. These traits are analogous because these two species produce starch and store it as energy in the same way. Homologous traits are the same physical traits but are used different way. 


Thursday, October 17, 2019

  1. I would argue that Jean-Baptiste Lamarck influence Charels Darwin them most. Scientist Jean-Lamarck was one of the first scientists to state the fact that species change over time, or evolution. Although, Jean-Lamarck did introduce this concept, he was wrong to think that developed traits cannot be passed on to an offspring. While Jean-Lamark influence Darwin to study evolution, Darwin was unaware that traits were passed on, causing conflict in his research. 
  2. Jean-Baptiste Lamarck, being the first to create the concept of evolution, believed that change was due to inheritance, use, and disuse (meaning the traits in which was used or not used in that specific species). The thought of use and disuse influenced the scientific community and was carried out through the study of evolution. This information is found at:

  1. The bullet point that refers most to Jean-Baptiste Lamarck is “In order for traits to evolve and change, they MUST be heritable.” Considering that Jean-Lamark is the individual who created to concept of use and disuse, it was discovered over time that these genetics were passed off to offspring. As research became more specific, it was more importantly discovered that these traits must be heritable in order for it to be passed on. In other words, the trait must be consistent from one generation to another. 
  2. Considering that all of these individuals had a large impact in scientific research at the same time, or before Darwin’s research, Darwin would not have discovered his theory of natural selection at the time that he did. Without knowing all of the variables these individuals provided, it would be doubted that Darwin could have developed his theory on his own. 
  3. Darwin was hesitant on publishing his theory for about 20 years because he was afraid of the possibility of his theory being provoked as a myth. At that time, the church authorities were against scientific beliefs.