Biology
Grade-8
Easy

Question

The image shows that the wolf is the ancestor to all the breeds of dogs shown below. How did this variation arise in a relatively short period of time?

  1. Genetic manipulation
  2. Natural selection
  3. Random chance
  4. Selective breeding

hintHint:

The given image shows that the different breeds of dogs are developed from the common wolf ancestor.

The correct answer is: Selective breeding


    Development of a new variety of animals can not be developed in a short period through natural selection because this process takes time.

    • Through a selective breeding variety of dogs are developed from a common wolf ancestor.
    • Through selective breeding or artificial selection, we can get new varieties in a short period as it is not a natural process.
    • For the domestication of animals, such varieties are developed from wild varieties of animals.

    Related Questions to study

    Grade-8
    Biology

    Artificial selection is  ______.

    • Artificial selection was discovered and explained by scientist Charles Darwin in the 19th century.
    • But this process is not a new one and has been used for thousands of years ago.
    • Ancient humans developed different breeds of animals and plants from wild ancestors. 
    • They developed breeds of animals for domestication and plants for crop production.
    • They were familiar with the results of inbreeding and hybridization.

    Artificial selection is  ______.

    BiologyGrade-8

    • Artificial selection was discovered and explained by scientist Charles Darwin in the 19th century.
    • But this process is not a new one and has been used for thousands of years ago.
    • Ancient humans developed different breeds of animals and plants from wild ancestors. 
    • They developed breeds of animals for domestication and plants for crop production.
    • They were familiar with the results of inbreeding and hybridization.

    Grade-8
    Biology

    Identify the type of selection in the given image.

    • The variety of corns are developed through selective breeding.
    • Ancient human developed such breeds of corn according to their needs and benefits.
    • Through inbreeding and hybridization such varieties are developed.
    • These varieties are able to grow in different soil and climatic conditions. Also, these are resistant for water loss. 

    Identify the type of selection in the given image.

    BiologyGrade-8

    • The variety of corns are developed through selective breeding.
    • Ancient human developed such breeds of corn according to their needs and benefits.
    • Through inbreeding and hybridization such varieties are developed.
    • These varieties are able to grow in different soil and climatic conditions. Also, these are resistant for water loss. 

    Grade-8
    Biology

    Identify the type of selection in the given image.

    • The given image represents that different animals evolved from the same ancestors, and become different in appearance due to migrating to different geographical areas like India, China, America, and Europe.
    •  In the second generation, these animals are more varied.
    • These variations are caused by random mating in these animals. 
    • These variations help these animals to adapt according to the environment.
    • So, natural selection can be noticed here as a result of random mating.

    Identify the type of selection in the given image.

    BiologyGrade-8

    • The given image represents that different animals evolved from the same ancestors, and become different in appearance due to migrating to different geographical areas like India, China, America, and Europe.
    •  In the second generation, these animals are more varied.
    • These variations are caused by random mating in these animals. 
    • These variations help these animals to adapt according to the environment.
    • So, natural selection can be noticed here as a result of random mating.

    parallel
    Grade-8
    Biology

    Artificial selection is also known as________.

    • Artificial selection is a process in which humans identify some desirable traits in organisms and through selective breeding, these traits are accumulated in the next generations of organisms.
    • Natural selection is caused by random mating while artificial selection is caused by selective breeding.
    • Human started the domestication of organisms that are beneficial to them many years ago. Some traits are useful for humans while some are not.
    • So, the process of artificial selection allows human to grow plants with desirable traits and to keep the domestic animals with desired traits. 

    Artificial selection is also known as________.

    BiologyGrade-8

    • Artificial selection is a process in which humans identify some desirable traits in organisms and through selective breeding, these traits are accumulated in the next generations of organisms.
    • Natural selection is caused by random mating while artificial selection is caused by selective breeding.
    • Human started the domestication of organisms that are beneficial to them many years ago. Some traits are useful for humans while some are not.
    • So, the process of artificial selection allows human to grow plants with desirable traits and to keep the domestic animals with desired traits. 

    Which of the following is a similarity between artificial selection and natural selection?

    BiologyGrade-8
    Grade-8
    Biology

    In artificial selection ‘Selective Breeding’ is a necessary process due to earth’s population. Why is artificial selection important for humanity? Artificial selection has been a key factor in the evolution of:

    In artificial selection ‘Selective Breeding’ is a necessary process due to earth’s population. Why is artificial selection important for humanity? Artificial selection has been a key factor in the evolution of:

    BiologyGrade-8
    parallel
    Grade-8
    Biology

    Artificial selection has been a key factor in the evolution of:

    Artificial selection has been a key factor in the evolution of:

    BiologyGrade-8
    Grade-8
    Biology

    What is an example of artificial selection?
     

    What is an example of artificial selection?
     

    BiologyGrade-8
    Grade-8
    Biology

    Mutations do not cause variation.

    Mutations do not cause variation.

    BiologyGrade-8
    parallel
    Grade-8
    Biology

    At the metaphase plate, what is the maximum number of alignments?

    At the metaphase plate, what is the maximum number of alignments?

    BiologyGrade-8
    Grade-8
    Biology

    How many chromosome combinations are present in any gamete?

    How many chromosome combinations are present in any gamete?

    BiologyGrade-8
    Grade-8
    Biology

    A change in a gene or chromosome is called _______________.

    A change in a gene or chromosome is called _______________.

    BiologyGrade-8
    parallel
    Grade-8
    Biology

    ____________________ is a process by which pieces of DNA break and recombine to produce new combinations of allele.

    ____________________ is a process by which pieces of DNA break and recombine to produce new combinations of allele.

    BiologyGrade-8
    Grade-8
    Biology

    Crossing over takes place between

    Crossing over takes place between

    BiologyGrade-8
    Grade-8
    Biology

    Millions of sperm are trying to fertilize an egg at a time. This process is called

    Millions of sperm are trying to fertilize an egg at a time. This process is called

    BiologyGrade-8
    parallel

    card img

    With Turito Academy.

    card img

    With Turito Foundation.

    card img

    Get an Expert Advice From Turito.

    Turito Academy

    card img

    With Turito Academy.

    Test Prep

    card img

    With Turito Foundation.