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
jasenka [17]
2 years ago
10

How dome some cells become brain cells and others become skin cells, when the DNA in all the cells is exactly the same. In other

words, if the instruction are exactly the same, how does one cell become a brain cell and another a skin cell?
Biology
1 answer:
bezimeni [28]2 years ago
8 0
All multicellular organisms develop from a single fertilized egg cell known as a zygote.  As this cell divides by mitosis, each new cell that is formed contains the exact same genetic material.  As the organism develop certain genes in certain cells are activated and others are inactivated so that cells develop into specialized cells such as brain cells and skin cells.
You might be interested in
Which is the best explaination of a recessive gene?
Elanso [62]
Answer: A gene that is hidden or not expressed.
8 0
3 years ago
Read 2 more answers
Oil spills can cause substantial environmental damage. What are examples of the types of wildlife that are affected and the impa
masha68 [24]

Spilled oil can harm the habitat because of its chemical constituents being poisonous. This can affect organisms both from internal and external exposure to oil. Oil can also end the lives of some small species of fish or invertebrates, reducing birds' and mammals' ability to maintain their body temperatures. 

Since most oils float, most sea creatures are heavily affected by oil. Examples include animals like sea otters and seabirds. 

Most states have issued some set of regulations to follow. Environmental Protection Agency's Rescuing Wildlife<span> page gives overview information about the issue. Additionally, </span>Tri-State Bird Rescue and Research<span> website and the </span>Oiled Wildlife Care Network<span> website explain the situation elaborately. </span>

7 0
3 years ago
Economists often use an economic model that reflects the total amount of goods and services required at all possible price level
pshichka [43]
The answer is letter D.
<span>
Economists often use the aggregate supply and demand model to reflect the total amount of goods and services required at all possible price levels during a specific period. It reflects the overall price of foods and services in an economy for a given period and is often illustrated with the supply-demand curve. This shows the relationship between price levels and quantity of output that a particular firm is willing to provide to the general public.</span>
6 0
3 years ago
Which evidence is consistent with the endosymbiotic hypothesis for the origin of the mitochondrion?
Sauron [17]
Bacteria, a prokaryote, has circular DNA, as do mitochondria and chloroplasts. This provides support for the Endosymbiotic Theory, which states that the mitochondria and chloroplast in eukaryotic cells were once aerobic bacteria (prokaryote) that were ingested by a large anaerobic bacteria (prokaryote).
4 0
2 years ago
If an Arctic polar bear is transferred to a zoo in tropical Singapore, it will not be able to survive. What could be the reason
andrew11 [14]
A, because its thick fur is designed to keep it warm, it would over heat and unfortunatly die
6 0
3 years ago
Read 2 more answers
Other questions:
  • Why did Copernicus not tell anyone about his theory until his deathbed?
    6·1 answer
  • Match the following. Please help?!
    11·1 answer
  • How is cell division related to homeostasis?
    9·2 answers
  • A person stuck in a snow storm suffers from hypothermia, while a person lost in a desert experiences hyperthermia. What do these
    5·1 answer
  • During winter time, the total number of sunlight decreases. What effect would this have on the pricess of photosynthesis
    5·2 answers
  • Question 6 (3 points)
    15·1 answer
  • Which of the following is true of fertilization in conifers?
    8·2 answers
  • Internal forces of sources which what is exert on each other in the bodies are part of the system is 
    11·1 answer
  • Which of the following statements is true about the fertilization process in flowers?
    8·1 answer
  • I have to pass a biology test, and the final question is if i am beautiful or not. i don't know how to answer so could you guys
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!