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hram777 [196]
3 years ago
5

Dr. Bert Vogelstein and his partners study the causes of cancer. In 2017, they published a study of 32 types of cancer. The stud

y concluded that most cancer cases are caused by DNA replication errors. In fact, 66% of the cancer cases they studied were caused by random DNA replication errors. Environmental factors such as diet, sunburns, and smoking caused 29% of the cancers. The last 5% of cancers in the study were caused by inherited factors.
Briefly describe the steps of DNA replication and point out one place in the code where an error can occur.
Chemistry
1 answer:
Kitty [74]3 years ago
7 0

Answer:

Error or mistakes during DNA replication is accountable for two-thirds or 66% of the cancer cases. These random and unpredictable errors called mutations that occur during the division of a cell as an error in copying of DNA.

DNA replication has three main steps:

Opening and separation of DNA strands of a helix - carried by an enzyme known as helicase that breaks the hydrogen bonds between nitrogenous bases of the helix of DNA.

The priming of the template strand - DNA primase helps RNA primers to bind to both strands at 3' end as soon as it separated

strat assembling the segments of new DNA on strands called elongation of the strands with help DNA polymerase I and after forming new strands the termination of the replication.

Errors or mistakes can occasionally take place if DNA polymerase inserts a wrong base during elongation of the strands.

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Drag the tiles to the correct boxes to complete the pairs.
Sophie [7]

Answer:

Explanation:

A pink rose- in codominance

Genes IA, IN, and IB.- Multiple alleles

Equal proportions- incomplete dominance

5 0
3 years ago
Approximately how much of the world’s oil and natural gas reserves are believed to be in the arctic?
Angelina_Jolie [31]
In 2009, the US Geological Survey estimated the Arctic may be home to 30% of the planet's natural gas reserves and 13% of oil.
7 0
3 years ago
When monovalent cation (X) binds to divalent anion (Y) it will form
Romashka-Z-Leto [24]

When a monovalent cation X binds to a divalent anion Y, a compound with the formula X_2Y would be formed.

A monovalent cation is an atom that has lost an electron. Hence, such cation has a single positive charge. A monovalent cation X will, thus, be X^+

A divalent anion is an atom that has gained two electrons. Such anion has 2 negative charge. Thus, divalent Y would be Y^2^-

Since Y is a divalent anion, it requires 2 electrons in order to successfully bind with another charged atom, a cation to be specific. Thus, two of  X^+ would be required to successfully bind  Y^2^-

   Y^2^- + X^+ + X^+ ----> X_2Y

More on the chemical formula can be found here: brainly.com/question/16741890

8 0
3 years ago
Determine the name for aqueous hbr. determine the name for aqueous hbr. bromic acid hydrobromous acid bromous acid hydrobromic a
Vadim26 [7]

The answer is hydrobromic acid.

That is the name for aqueous HBr is hydrobromic acid.

If there is no water that is if it is not aqueous then the name will be hydrogen bromide but as it is acid and in aqueous state so the name will be  hydrobromic acid. As it is acid that's why the suffic ic is used and as it is in aqueous state, so hydro is used.

6 0
4 years ago
A helium balloon has a pressure of 0.2 kPa and a volume of 15 L. If the pressure increases to 0.5 kPa, what volume will the ball
Alex17521 [72]

Answer:

6.0 L

Explanation:

For this question, we can use

P1×V1= P2 × V2

where

P1 (initial pressure)= 0.2 kPa

V1 (initial volume)= 15L

P2 (final pressure)= 0.5 kPa

V2(final volume)= ?

Since we are trying to find final volume, we can rearrange the equation to make V2 the subject.

V2= (P1 × V1)/ P2

V2= (0.2 ×15)/0.5

V2 =6 L

7 0
3 years ago
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