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
ss7ja [257]
3 years ago
12

If a single mutation turns off the growth of some pairs of legs within an organism, what's most likely affected?

Biology
1 answer:
poizon [28]3 years ago
3 0

Answer is A. A Hox gene

Hox genes are a series of genes that controls the differentiation of cells and tissues in an embryo by turn on and off other genes. If Hox genes express incorrectly, a major changes in the morphology of the individual can be seen.

Let’s understand this with an example: The Ultrabithorax, a Hox gene determines the Third thoracic segment in <em>Drosophila melanogaster</em>. Third thoracic segment displays a pair of legs and a pair of reduced wings used for balancing. In the mutant<em> Drosophila</em> the functional Ultrabithorax protein is absent. Due to this mutation, the third thoracic segment now expresses the same structures found on the second thoracic segment, which contains a pair of legs and a pair of wings which are fully developed .  


You might be interested in
What do replication and transcription have in common?
andrew-mc [135]
Replication it shows the production of identical copies of DNA and Transcription transfer the coded message for protein synthesis from DNA onto mRNA
7 0
3 years ago
How did flowers and fruits contribute to angiosperms becoming dominant land plants on earth?
Ainat [17]

Answer: The study, by Dr. Tim Brodribb and Dr. Taylor Field of the University of Tasmania and University of Tennessee, used plant physiology to reveal how flowering plants, including crops, were able to dominate land by evolving more efficient hydraulics, or 'leaf plumbing', to increase rates of photosynthesis.

Explanation: The reason for the success of this evolutionary step is that under relatively low atmospheric C02 conditions, like those existing at present, water transport efficiency and photosynthetic performance are tightly linked. Therefore adaptations that increase water transport will enhance maximum photosynthesis, exerting substantial evolutionary leverage over competing species.

The evolution of dense leaf venation in flowering plants, around 140-100 million years ago, was an event with profound significance for the continued evolution of flowering plants. This step provided a 'cretaceous productivity stimulus package' which reverberated across the biosphere and led to these plants playing the fundamental role in the biological and atmospheric functions of the earth.

4 0
2 years ago
When getting a vaccination, which substance is
Vlada [557]

Answer – 3. A weakened form of a virus
 When getting a vaccination, the substance which is injected into the body is a weakened form of a virus. This weakened from of the virus has the ability to arouse the body’s defense mechanism without causing an infection. <span>
</span>
3 0
3 years ago
Describe the process of cloning from start to finish.
abruzzese [7]

Answer:

1. Isolation of donor DNA fragment or gene.

2. Selection of suitable vector.

3. Incorporation of donor DNA fragment into the vector.

4. Transformation of recombinant vector into a suitable host cell.

5. Isolation of recombinant host cell.

3 0
3 years ago
While swabbing objects to sample bacteria, you want to create a negative control to ensure that you are practicing proper asepti
irina1246 [14]

The result which would be seen from a properly prepared negative control is nothing.

<h3>What is a Negative control?</h3>

This type of control  is used to test and ensure that in the absence of the antigen we do not still get a positive reaction.

Since proper aseptic technique was practised and there was no swabbing of the surface then there would be nothing seen in the properly prepared negative control.

Read more about Negative control here brainly.com/question/7452004

8 0
2 years ago
Read 2 more answers
Other questions:
  • What is the temperature of the Sun's middle most layer ?
    5·2 answers
  • Which organic molecule is correctly paired with an end product of its break down via hydrolysis?
    13·1 answer
  • Which of the following is not an effect of meiosis?
    15·1 answer
  • Which formula represents Charles’s law?
    5·2 answers
  • Carbohydrates, fats, proteins: These organic molecules ALL have this element in common. This element can form multiple bonds, an
    7·2 answers
  • Which of the following examples of an ecological study involves the ecosystem level of organization? 1. effects of competition o
    13·1 answer
  • How do fossils of extinct species provide evidence of how life on earth has changed?
    5·1 answer
  • A nation has a population growth rate of 3.2%. The country currently has a population of 12 million. In how many years will the
    7·1 answer
  • Natural effects that cause global warming
    6·1 answer
  • Boosting photosynthesis what are two reasons that research was significant
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!