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docker41 [41]
3 years ago
8

Identify the four postulates of natural selection.A challenge to traditional (pre-1860) ideas about species came from embryology

, when it was discovered that _____.
Biology
1 answer:
victus00 [196]3 years ago
7 0
<h2>Postulates of natural selection</h2>

Explanation:

  • Early in development, all vertebrate embryos are remarkably similar. The similarities among the embryos imply that the development of all vertebrates (having a backbone) evolved as new genetic instructions were placed on  Top of older ones.
  • The chick embryo is on the right. It is easier to compare a newly hatched chick and a newborn baby. After birth, a backbone or vertebrae are clearly visible, as are legs, a mouth, a pair of eyes, etc. The chick’s  Skeletal system, in general, has multiple similarities to ours, including having one bone in the upper leg and upper wing and two bones in the lower leg and lower wing. This mimics our arm and leg skeletal structures.
  • Mammals, birds, reptiles, and fish, look very similar at the earliest stages of growth inside the womb of the mother animal.Vertebrate embryos begin developing similar features due to related ancestors. As the embryo grows, it may drop some of these ancestral traits as the genetic code becomes more specific for that species.

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According to the competitive exclusion principle, when two or more species in an ecosystem are competing for the same resource. The one which has undergone favorable adaptation and more competing will be likely to derive those resource than the one which has not undergone adaptation or less adaptive to the environment and less competing. Squirrels and chipmunks compete for the same food source and this food source became scare one of the two species is likely to disappear according to the competitive exclusion principle because the degree of competition between two species will increase.

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Based on biology and neo-Darwinism, _____ explains how environment selects organizations for survival or extinction.
lutik1710 [3]

Given what we know, we can say that biology and neo-Darwinism both support the idea that natural selection explains how the environment selects organizations for survival or extinction.

<h3>Natural Selection. </h3>
  • This concept is often summarized by the phrase "survival of the fittest".
  • This refers to the ability of an organism to adapt to its environment.
  • The better-adapted organisms will live to pass on their genetic information, thus changing the organization of the species.
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Therefore, since natural selection involves the survival or extinction of a species based solely upon their ability to adapt and change their genetic organization in response to their environment, we can say that this concept helps to explain how the environment selects organizations for survival or extinction.

To learn more about natural selection visit:

brainly.com/question/2725702?referrer=searchResults

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