i need help please

Question

1. do you think that organisms/species will become more different from each other over time? Or more similar? Explain your reasoning.

 

Answer 1

There is a fundamental balance between natural selection that decreases diversity overall and the emergence of new phenotypes resulting from mutation. A population of individuals (same species) all located within the same environment with the same natural selection are likely to experience a decrease in diversity. However, this can be overcome by other factors. For example, new individuals entering the population (bringing new heritable phenotypes).

Answer 2

Hi Eulalie,

Usually it depends on the species in question, for example you can see over time new species has emerged which suggests they are getting more and more different in that case. However there are evidence of convergent evolutions as well as one can argue that the birds are more similar to bats with their wings and ability to fly than land based dinosaurs were. I hope this helps