Table of Contents
- 1 Is the best example of natural selection?
- 2 Which conditions are necessary for natural selection to occur select all of the answers that apply?
- 3 How do lizards go through natural selection?
- 4 How are the Galapagos finches an example of natural selection?
- 5 When did Darwin come up with the idea of natural selection?
Is the best example of natural selection?
Tree frogs are the best examples of natural selection. Natural selection is a natural process in which organisms that are more adapted to their environment successfully reproduce more than those that are not. Snakes and birds, for example, have been known to devour tree frogs.
What is a modern day example of natural selection?
Lactose tolerance One example of recent natural selection in humans involves the ability to tolerate the sugar, lactose, in milk. In most parts of the world, adults are unable to drink milk because their body switches off the intestinal production of lactase, an enzyme that digests the sugar in the milk, after weaning.
What animal is an example of natural selection?
A classic example of natural selection at work is the origin of giraffes’ long necks. The ancestors of modern giraffes were animals similar to deer or antelope, with necks of ordinary length.
Which conditions are necessary for natural selection to occur select all of the answers that apply?
Four conditions are needed for natural selection to occur: reproduction, heredity, variation in fitness or organisms, variation in individual characters among members of the population. If they are met, natural selection automatically results.
How are peacocks an example of natural selection?
The concept of natural selection is often associated with some kind of struggle to survive. The classic example of mate choice is a peacock’s tail. Peahens prefer peacocks with large and colourful tails, so those peacocks get to mate more frequently and have more offspring.
Which is an example of natural selection quizlet?
An example of variation is that I have a cat with black fur and one with yellow fur. Trait that can be PASSED DOWN to offspring through genes.
How do lizards go through natural selection?
For more than a century, scientists have understood that natural selection have profound effects on how an animal looks — Anolis lizards that spend more time on the ground, for example, might need longer legs for running, while species that remain in the trees usually have shorter legs better suited for climbing.
What are the 3 conditions for natural selection?
Conditions for natural selection
- Reproduction. Entities must reproduce to form a new generation.
- Variation in characteristics of the members of the population.
- Variation in the fitness of organisms associated with these characteristics.
What are the 5 types of natural selection?
Stabilizing selection, directional selection, diversifying selection, frequency -dependent selection, and sexual selection all contribute to the way natural selection can affect variation within a population.
How are the Galapagos finches an example of natural selection?
However, the Galapagos finches helped Darwin solidify his idea of natural selection. The favorable adaptations of Darwin’s Finches’ beaks were selected for over generations until they all branched out to make new species. These birds, although nearly identical in all other ways to mainland finches, had different beaks.
Which is the best example of natural selection?
Experts believe that about 9 percent of our genes are undergoing rapid evolution as we speak [source: Science Daily]. The genes most affected by natural selection are those involving the immune system, sexual reproduction and sensory perception. Lactose intolerance is one example of natural selection.
How does natural selection change organisms over time?
Natural selection is a pressure that causes groups of organisms to change over time. Animals inherit their genetics from their parents or ancestors, and the environment is constantly changing.
When did Darwin come up with the idea of natural selection?
In 1859, he brought the idea of natural selection to the attention of the world in his best-selling book, On the Origin of Species. Natural selection is the process through which populations of living organisms adapt and change. Individuals in a population are naturally variable, meaning that they are all different in some ways.
Which is an example of a directional selection?
Directional selection is a type of natural selection that occurs when one side of the spectrum of a certain trait is favored over the other. For instance, if the smallest organisms get eaten, and larger organisms are totally protected, the population will tend to get much larger.