Question

In: Biology

Fully describe and explain endosymbiotic theory in a few sentences. (10 pts) True or False. Explain...

  1. Fully describe and explain endosymbiotic theory in a few sentences. (10 pts)

  1. True or False. Explain your answer. (10pts)

Anaerobic organisms have very small mitochondria.

  1. What determines speciation? (10 pts)
  1. What is genetic drift and genetic flow. Provide new examples for each that I did not provide in the lecture (20 pts)
  1. During the _________________ inorganic matter released _____________ into the air giving rise to _______________ forms of life. These new life forms differed from previous life forms that consisted of _____________ and other _______________. (10 pts).
  1. What are the three types of evolution that can occur over long periods of time? Give an example for each. Again, do not use the in class examples, be creative (30 pts).
  1. ­­­­_______________ proposed the idea of _____________ which contributed to the theory of _____________. He observed that finches on the Galapagos Islands had developed different beaks to allow them to better ______________ to the environment and competition of food sources. The change in beaks led to _________________ of the finches (10 pts).

Solutions

Expert Solution

Answer:

Endosymbiotic theory tells that during evolution prokaryotic cells came into symbiotic relationship with more developed eukaryotic cell and developed into organelles of eukaryotes, example:mitochondria and chloroplasts.

This is a false statement. Anaerobes are usually prokaryotes that do not have mitochondria.

Speciation depends on ability of an individual to adapt to the environment and it's reproductive fitness.

Genetic drift is defined as sudden change in allele frequency due to disappearance or mutation of an allele.

Gene flow refers to change in allele frequency due to immigration and emigration of individual.

Fill ups:

Evolution..water vapours..aquatic.

bacteria and other prokaryotes.

The three types of evolution:

Progressive ,stable and regressive evolution

Example:development of four chambered heart in humans is an example of progressive evolution and presence of tail in newborn is an example of regressive evolution.

Darwin ..fitness..natural selection.

Adapt..adaptive radiation.

gladiator answered 1 year ago
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