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
butalik [34]
3 years ago
12

Li-Fraumeni syndrome (LFS1) is a rare hereditary disorder that leads to a predisposition to cancer. This hereditary disorder is

linked to mutations in the tumor suppressor gene encoding the transcription factor p53. p53 acts at the G1 checkpoint. If damaged DNA is detected, p53 halts the cell cycle. As p53 levels rise, the production of p21 is triggered. p21 enforces the halt in the cell cycle. A variant of Li-Fraumeni, called LFS2, is thought to occur due to a mutation of the CHK2 gene, which is also a tumor suppressor gene. CHK2 regulates the action of p53. Which of the following cascades is most likely to occur in a normal cell that does not contain the LFS mutation?
Biology
1 answer:
Nimfa-mama [501]3 years ago
3 0

Answer:

CHK2, p53, p21, cell cycle progression.

Explanation:

In a normal cell with no LFS mutation, during the G1 stage of cell cycle progression, the CHK2 activates if there is damage in the DNA. CHK2 activates p53, which is a tumor suppressor protein that will hold the cell cycle in G1/S until the DNA is repaired. The p53 protein activates p21, a protein that binds to CDK2 and stops the cell cycle. The cell cycle will continue once the damage is repaired.      

You might be interested in
2) Explain the relationships among an organisms <br> environment, adaptations,<br> and evolution.
seropon [69]

Answer:

Organisms are part of an environment and are continually adapting to the changes to live. These environmental changes and the adaptation play a major role in evolution of organism.

Explanation:

5 0
3 years ago
How can fertilizer use be detrimental to the environment? a. It can enter waterways, causing them to accumulate an excess of nut
yan [13]

Answer:  d. All the above

Fertilizers can be deterimental to the environment. Excess use of fertilizers will result in eutrophication in the water body. Water body being more enriched with nutrients will result in excessive growth of aquatic plants. This also result in algal bloom in which algae grows on the surface of water body because of this atmospheric oxygen not able to reach the aquatic plants, hence results in oxygen depletion.

 

4 0
3 years ago
Read 2 more answers
You give your mother a pendant for her birthday. This pendant is a mineral that looks like a cat’s eye. This mineral has the pro
Ronch [10]
The statement is false. asterism makes a star like formation in a mineral
8 0
3 years ago
How do the Punnett squares for a monohybrid cross and a dihybrid cross differ?
Lorico [155]
For a monohybrid cross, you are crossing two alleles with two alleles. in a dihybrid cross, you are crossing four alleles with four alleles.
5 0
3 years ago
Process of diffusion in living organisms
ddd [48]
HEY MATE....!
HERE'S THE ANSWER

Diffusion is a process in which particles of two or more substances intermixed with each other.

HOPE IT HELPS....
7 0
3 years ago
Other questions:
  • Halp meh out plz its timed!!!
    10·2 answers
  • A system that exchanges energy with its surroundings is called ___
    14·1 answer
  • What electron carrier is used in the redox reactions in cellular respiration
    15·2 answers
  • By measuring the height of a tortoise a scientist is gathering?
    14·1 answer
  • If two parents are going to have one child, the percent probability of having a girl is _____ and the percent probability of hav
    12·2 answers
  • What is the SI unit for intensity
    9·1 answer
  • The act of white blood cells engulfing a bacterium is?​
    13·1 answer
  • Describe how and where viruses reproduce and the function of RNA and DNA in this process.
    9·1 answer
  • What is the speed of a jet plane that travels 1864 meters in 42 seconds
    8·1 answer
  • What is an endemic species?
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!