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yan [13]
2 years ago
10

A scientist thinks that a certain chemical is a mutagen. She exposes plant cells to a large amount of this chemical in the labor

atory.
Biology
1 answer:
PSYCHO15rus [73]2 years ago
3 0

A mutation is an alteration in the original DNA sequence.  Option 3. The cells change after being exposed to the chemical, and this change is passed to the next generation of cells.

<h3>What is a mutation?</h3>

A mutation is a stable and hereditably change in the genetic material.

Mutations alter DNI sequences and introduce new variants. Many of these variants are eliminated, but some of them might succeed and be incorporated in each individual, affecting the entire species.

They can be damaging or beneficial. These last mutations are the ones that have been selected by natural selection.

Different mutagenic agents cause changes in genetic information, increasing mutations over the normal level. They can change the bases sequences and bases pairing.

Mutations depend on each group's environment and its ecological pressures, and they accumulate in time. They are inherited to the followings generation and get to spread.

According to this framework, the correct option is 3. The cells change after being exposed to the chemical, and this change is passed to the next generation of cells.

If the analyzed chemical is a mutagen, then it will cause an alteration in the DNA sequence and this change -mutation- will pass to the following generations spreading in the population.

You can learn more about mutations at

brainly.com/question/13923224

brainly.com/question/9598940

brainly.com/question/17106056

#SPJ1  

A scientist thinks that a certain chemical is a mutagen. She exposes plant cells to a large amount of this chemical in

the laboratory

Which statement best provides evidence that the substance is a mutagen?

  1. The cells die within hours of being exposed to the chemical.
  2. The cells grow more quickly than those that were not exposed to the chemical.
  3. The cells change after being exposed to the chemical, and this change is passed to the next generation of cells.
  4. The cells continue to divide at the same rate as before they were exposed to the chemical.
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15 Pts. Will give brainliest if correct.
Stolb23 [73]

Answer:

atmospheric nitrogen converted into early water vapor which was later pressurized into liquid

3 0
3 years ago
Read 2 more answers
Mutation is a random and non-adaptive process. This was first proven by:
s2008m [1.1K]

Answer:

Option (d).

Explanation:

Mutation may be defined as the sudden, heritable change in the nucleotide sequence of the organism. Mutation may occur due to the errors in DNA replication or may occurs due to the mutagens.

Joshua and Lederberg experiment explains that mutation is the non adaptive and random process that occur in the organism. He used the replica plating of E.coli and grows them on streptomycin drug. The bacteria was grown on the the primary plate and they are transferred to the secondary plate with streptomycin drug in the growth environment. The resistant strain of bacteria grows in the streptomycin environment.The pattern of bacteria growth on the plate explained that mutation occurs randomly and it is a non adaptive process.

Thus, the correct answer is option (d).

4 0
3 years ago
Some operons have both a positive and negative control mechanism built into the DNA sequence of the operon. That means both an a
ahrayia [7]

Answer:

Following are the four combinations of active or inactive regulatory proteins that could be present anytime in the cell:

Active repressor , Active activator.

Active repressor, Inactive activator.

Inactive repressor, Active activator.

Inactive repressor, Inactive activator.

Explanation:

Use the attached diagram for

explanations on the four combinations of active or inactive regulatory proteins in cells.

7 0
3 years ago
What impact does solar gravity have in space?
densk [106]

Answer:

It pulls the moon to the earth.

Explanation:

6 0
3 years ago
When does the cell have to use active transport ?
soldier1979 [14.2K]
The cell has to use active transport when it's trying to transport material against the concentration gradient. (from low to high concentration) Or, if a molecule is too big to diffuse through the cell membrane, it must be moved through using a carrier protein.
Hope that helped you.
8 0
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