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
Lady_Fox [76]
3 years ago
9

A mutagen is

Biology
2 answers:
bagirrra123 [75]3 years ago
7 0
<span>An agent, such as radiation or a chemical substance, that causes genetic mutation.

So your answer is ....

B. an agent that causes mutation in DNA
</span>
Nadya [2.5K]3 years ago
7 0

A component or a molecule which when incorporated into the DNA changes its genetic composition is called a mutagen.

Further Explanation:

A mutagen is a compound that might be chemical or physical in nature and cause changes in the genetic material which are heritable and irreversible. When the repair mechanism is unable to recognize the mutagenic effects, it tends to escape the lesions created by the mutagen. Such mutations or lesions become fixed with time and can be inherited by the progeny cells. The changes occurred due to mutagen are called mutations.

The mutations caused due to mutagens are known as induced mutations whereas, some mutations occur spontaneously due to DNA replication error, error in recombination and repair and are called spontaneous mutations.

The mutagens are categorized as follows:

1. Chemical mutagens

The chemical compounds such as aromatic amines, alkylating agents, and deaminating agents directly interact with the DNA and produce mutagenic effects. For example, nitrous oxide is a deaminating agent and causes cytosine to convert into uracil changing the DNA sequence. The alkylating agents result in breakages and crosslinking in the DNA by adding ethyl or methyl group to the bases.  

2. Physical mutagens

The ionizing radiations, radioactive decay, and the ultraviolet radiations are the physical agents that cause mutations in the DNA. The radiations like gamma rays and X-rays result in DNA breakages. The ultraviolet radiations absorbed by the bases results in the formation of pyrimidine dimers.  

3. Biological mutagens

Bacteria, viruses, and transposons act as biological agents to bring about mutation. The transposons translocate into DNA fragment and disrupt the genetic composition of the functional genes. The virus also disrupts the genetic function once incorporated into the genome. Certain bacteria produce oxidative species which cause DNA damage and increase the mutation efficiency.

Learn more:

1. Learn more about aerobic and anaerobic respiration brainly.com/question/1544781

2. Learn more about cellular respiration brainly.com/question/543244

3. Learn more about alcoholic respirationhttps://brainly.com/question/7419007

Answer Details:

Grade:Higher secondary

Subject:Biology

Chapter: Mutagens

Keywords:

Mutation, mutagen, physical mutagens, chemical mutagens, biological mutagens, alkylating agents, aromatic amines, ionizing radiations, transposons, bacteria, virus, deaminating agents.

You might be interested in
Is the following a hypothesis: temperature will affect the cohesion of water to a penny?
lorasvet [3.4K]
It's not a hypothesis because it's asking a question for example a hypothesis is a statement supported by evidence so for example "my hypothesis would be the temperature does affect the cohesion of water to penny because of this and that"

hope this helps
5 0
3 years ago
Which statement best explains why a banana is yellow?
Paladinen [302]
It reflects yellow light

5 0
3 years ago
Read 2 more answers
The process by which the zygote attaches to the uterine wall.
frutty [35]

Answer:

implantation – the process by which the zygote attaches to the uterine wall.

6 0
2 years ago
Read 2 more answers
The DNA sequence reads acgttcatt before a mutation occurs. After the mutation, the dna senquence reads atcgttcatt. Which type of
taurus [48]
An insertion mutation occured.
After the mutation, a letter was inserted, and the others remained intact. The number of letters increased by 1.
3 0
3 years ago
A machine called os used for both harvesting and threshing<br>​
Bess [88]

Answer:

<h2><u>combine harvester</u></h2>

Explanation:

hope this helps you!!

4 0
2 years ago
Read 2 more answers
Other questions:
  • How has this understanding affected the field of medicine?
    13·1 answer
  • How does the sun produce heat and light for the earth?
    14·1 answer
  • The blending of waves. Light or sound, it’s called ..
    11·2 answers
  • Which pair of elements would be expected to form an ionic bond?
    10·2 answers
  • The restriction enzymes of bacteria protect the bacteria from successful attack by bacteriophages, whose genomes can be degraded
    8·1 answer
  • This is the name that refers to the empty space around type or other features in a layout.
    12·1 answer
  • A _______ is a segment of DNA that directs the development of some inherited traits and it has different forms called __________
    14·1 answer
  • What are the building blocks for proteins
    8·1 answer
  • How can I use the phrase "chemical pollution" in a sentence?
    9·1 answer
  • A camel has a hump to store water so it can survive in its desert environment. which kind of adaptation is this?
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!