1 / 5

The Impact of Reproductive Strategies and Natural Selection on Population Dynamics

This text explores the implications of reproductive strategies on population size. It discusses how if females produce more than one surviving daughter, the population would increase, potentially leading to competition for resources. Additionally, it addresses essential criteria for evolution via natural selection, highlighting genetic variation and survival randomness. Moreover, it distinguishes between selection and evolution, emphasizing that evolution involves changes in populations over time. Lastly, it clarifies that natural selection is a non-random process influenced by survival rather than random events.

amma
Télécharger la présentation

The Impact of Reproductive Strategies and Natural Selection on Population Dynamics

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. 1) What would happen to the population size if the average female produced more than one surviving reproducing daughter? • A) there would be more females than males • B) the population would decrease • C) the population would increase, causing increased competition for food and other resources • D) the population would stay the same size without increased competition

  2. 2) Which of the following are necessary for evolution by natural selection? • A) genetic variation underlying phenotypic variation • B) random variation in survival and reproduction • C) forethought and intention • D) answers A and B above

  3. 3) “new” traits arise • A) when they are needed to increase survival • B) by incremental modifications of existing traits • C) because they might become useful at some time in the future, even though they are not advantageous now

  4. 4) Selection differs from evolution in the following ways • A) selection occurs among individuals within generations • B) selection reflects individual fitness • C) evolution occurs in populations, not individuals • D) evolution is change in genotype/allele frequency • E) all of the above are correct

  5. 5) Is natural selection a random process? • A) yes, because it is not guided by a “designer” • B) no, it is non-random survival and reproduction • C) yes, because mutations are random • D) both A and C above are correct

More Related