1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
pentagon [3]
3 years ago
5

A population of pigs lives on an island together with burrowing termites. Pigs that have the longest snouts tend to survive bett

er. Over time, most of the pig population is made up of individuals that have very long snouts. This is an example of which type of selection? directional selection disruptive selection stabilizing selection ecosystem selection
Biology
2 answers:
never [62]3 years ago
5 0

There exist three basic types of selection in an ecosystem, they are:

1) Directional selection

2) Disruptive selection

3) Stabilizing selection

The example of directional selection can be: that if in a population of pigs those having the longest snouts survive better and ultimately their population increases.

Further Explanation:

In an ecosystem, those organisms that better fit in the environment gets selected and survives more and this occurs due to the phenomenon known as natural selection. Three types of selection that occur in a population are directional, disruptive and stabilizing selection.  

1) Directional selection: In this type of selection, those organisms having one of the extreme phenotypes get selected over the other type of phenotype. This leads to a shift in allele frequency.

2) Disruptive selection: In this type of selection, those organisms having extreme phenotype gets selected over the other type of phenotype.

3) Stabilizing selection: In this type of selection, those organisms having an intermediate phenotype gets selected over the other type of phenotype.

Example of the three types of selection: If in a population there are pigs that have a long snout, small and intermediate snout. If there is the selection of:

1) Only pigs having long snout then this indicates that directional selection has occurred.

2) Pigs having either long or small snouts then this indicates that disruptive selection has occurred.

3) Only pigs having an intermediate type of selection then this indicates that stabilizing selection has occurred.

Learn More:

1. Learn more about plants: brainly.com/question/862697

2. Learn more about bacteria: brainly.com/question/4656094

3. Learn more about viruses: brainly.com/question/3889603

Answer Details:

Grade: Middle school

Chapter: Evolution

Subject: Biology

Keywords:

Ecosystem, environment, natural selection, directional selection, allele frequency, disruptive population, organisms, phenotype.

alexandr402 [8]3 years ago
4 0

Answer:

Explanation:

directional selection

You might be interested in
Are viruses composed of cells?
SashulF [63]

Answer:

No

Explanation:

Viruses are not made out of cells. A single virus particle is known as a virion, and is made up of a set of genes bundled within a protective protein shell called a capsid. Certain virus strains will have an extra membrane (lipid bilayer) surrounding it called an envelope.

4 0
3 years ago
Read 2 more answers
Fe Sci 7-2
Andrew [12]
Answer: The nervous system allows organisms to sense, organize, and react to information in the environment. The basic unit of the nervous system is the neuron. Synapses form between the neurons, allowing them to communicate to other neurons or other systems in the body.
May I please have brainliest?
8 0
2 years ago
The blood sugar in your body is maintained by a gland that acts as an exocrine and endocrine gland. It is the
Irina-Kira [14]

Answer:

Pancreas.

Explanation:

Pancreas is an organ that acts as both exocrine as well as endocrine gland. As exocrine gland, it secretes digestive enzymes into the small intestine that help in digestion of complex food molecules.

As an endocrine gland, it secretes glucagon (from alpha cells) and insulin (from beta cells) hormones, directly into the bloodstream. Both of these hormones are responsible for the regulation of blood sugar level in the body.

Thus, the correct answer is 'pancreas.'

8 0
3 years ago
Which property of water molecules explains the other properties
Diano4ka-milaya [45]
<span>Essentially, cohesion and adhesion are the "stickiness" that water molecules have for each other and for other substances. You can see this in the picture to the right. The water drop is composed of water molecules that like to stick together, an example of the property of cohesion.</span>
8 0
3 years ago
What are the steps of DNA Replication in order?
slega [8]

Explanation:

1) The enzyme helicase catalyses the unwinding of the two DNA strands by disrupting the hydrogen bonds between complementary base pairs.

2) Single-stranded binding proteins attach to the DNA strands to stabilise them and prevent them from joining back together.

3) The enzyme primase catalyses the addition of a short primer consisting of RNA nulceotides to the DNA strand. This serves as an 'anchor' DNA polymerase to initiate replication.

4) The enzyme DNA polymerase synthesizes a new DNA strand by incorporating DNA nucleotides complementary to the existing strand. DNA polymerase activity only occurs in the 5' ---> 3' direction.

5) The enzyme ligase catalyses the formation of hydrogen bonds between the two new pairs of DNA strands, and seals any breakages in the sugar-phosphate backbone.

6 0
3 years ago
Other questions:
  • Explain the importance of the study of environmental science.
    11·1 answer
  • Can any one organism in the food web be a consumer, an omnivore a predator and a pr Justify your answer ?
    15·1 answer
  • Where in the cell was the ATP produced?
    14·1 answer
  • How is a scientific theory developed?
    8·1 answer
  • Ravi ran 200 metres race in sports day. He feels that his heart was beating faster than usual. a) Why was his heart beating fast
    5·1 answer
  • What 6 organelles help transport proteins inside the human cell?
    6·1 answer
  • The chemical bond that holds the elements together is an
    7·2 answers
  • Controllable risk factors for heart disease include
    11·2 answers
  • In what ways, if any, does a single-celled organism differ from its parent?​
    7·1 answer
  • Why a cell spends the majority of its time in interphase.
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!