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Anna71 [15]
3 years ago
11

During DNA replication, TTAGC becomes ATAGC. This is an example of _____. deletion insertion substitution copying

Biology
1 answer:
katovenus [111]3 years ago
4 0
This is an example of a substitution mutation. Substitution means changing a base pair in a codon, with another base pair. For example, in this case, Thymine was replaced with Adenine. In Deletion, insertion, and copying, a change in the base pair occurs due to deletion, addition or copying of base pair itself.
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Which statement BEST explains Lamarck's theory of acquired characteristics as it relates to the neck length of giraffes?
Nuetrik [128]
LAMARCK's THEORY 
                                   
Jean Baptiste Lamarck (1744-1829) proposed a theory which was published in "<em>Philosophie Zoologique"</em> (1809).  This theory is simply known as Lamarckism. It has two main postulates:

1. Use and disuse of organs
2. Inheritance of acquired characters.

Example
             He explained his theory by giving the examples:
1. Neck length of Girrafes
2. Webbed toes of water birds, and
3. Wings of penguins

Explanation
               Lamarck explained that water birds use toe for swimming, with the passage of time webbed were developed in their toes. these features were then transferred to their offspring. 

Drawback
                Lamarck theory was based on natural observation. It did not explain the genetic basis of such characteristics.

3 0
3 years ago
Virginia’s Blue Ridge Mountains were pushed up when the North American and African continents collided in a process known as
skelet666 [1.2K]
The answer is folding. :3
3 0
3 years ago
Read 2 more answers
Antibiotics, antimicrobial resistance and the control of disease - Essay
kondaur [170]

<u>Antibiotics are used to kill bacteria:</u>

Antibiotic is a naturally produced substance that is used to kill bacteria. The first antibiotic was penicillin produced from fungus. The word antibiotic means against life which means it is against the life of pathogenic bacteria.

In the case of the living organism that is treated antibiotic is ‘pro life’. Antimicrobials are used to kill pathogenic microbes like fungus, bacteria, virus etc. Sometimes the microbes become resistant to the antimicrobials and they are said to develop is antimicrobial resistance.

When pathogens develop antimicrobial resistance newer drugs have to be developed in place of the earlier ones to treat the disease.

5 0
3 years ago
Why are there so many differences in the properties of peptides and proteins?
Volgvan
Protiens are very important and they are regarded beneficial 
The protiens and peptides differ in their size protiens are relatively small
There are soi many difference among both because
<span>Several amino acid sequences are possible for proteins and peptides
</span>As there are 20 amino acids and different folding structure
so correct option is A
hope it helps
4 0
3 years ago
4. There are a variety of receptors and second messenger systems in cells that in many cases exhibit cross-talk with each other
frutty [35]

Answer:

These 3 receptors are different from each other. They do differ from each other by their location and function.

1. Testosterone receptor :  It is an Androgenic receptor

2. Ferrotransferrin receptor :  It acts as an element-binding protein which is iron responsive.

3. Fibroblast growth factor :  It acts as a growth factor.

Explanation:

1. Testosterone :

Location- Xq 11-12 in the X chromosome.

Function-  

  1. maintains male skeletal integrity by osteoblast and osteocytes.
  2. maintains female sexual, somatic and behavior.
  3. develops male sexual characters.

2. Ferrotransferrin :

Location- chromosome 3q21

Function-

  1. intakes iron in the cell.
  2. maintains the cellular iron equilibrium.
  3. post-transcriptional modification.  

3. Fibroblast (growth) :

Location- chromosome 4p16.3

Function-

  1. helps in bone development.
  2. helps in bone growth maintenance by ossification.

8 0
3 years ago
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