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Xelga [282]
3 years ago
6

If anyone knows this please let me know and explain??

Biology
2 answers:
Alex777 [14]3 years ago
8 0
C) Evaporating

The molecules in the first state are liquid (you can tell how they aren’t in a fixed structure) break apart randomly and evaporate into a gas
weqwewe [10]3 years ago
7 0

Answer:

I am pretty sure the answer is Melting

Explanation:

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Solar system included all of the following except what?
inna [77]

Answer: Stars?

Explanation: I think it is stars because there is only one star in our solar system. I don't know for sure if it is, but I think it is. Don't be too sure of my answer.

3 0
3 years ago
What are the oldest life forms on earth
rosijanka [135]
Trees, almost all of them are ancient.
4 0
3 years ago
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Which statement about somatic mutations is true? A)They exist in all the cells of the body. B)They are acquired through exposure
lozanna [386]

They exist in all the cells of the body. They are inherited via sperm and egg cells.  

They will not be inherited unless a similar damage has happened in eggs or sperms due to the same exposure to mutagen, In that case, progeny might show the mutation.

But they are an inherited mutation that was supported in fertilization of the egg during reproduction.

7 0
3 years ago
Read 2 more answers
Deletion of a DNA base from a gene affects an organism by—
sergiy2304 [10]

Answer:

Deletion of a DNA base from a gene affects an organism by changing the sequence of amino acids in a protein.

Explanation:

A DNA fragment forms a gene, with a specific sequence of nitrogenous bases, which determines the synthesis of a specific protein. When a deletion of a base occurs in such a gene, it affects:

  • Transcription of the mRNA, which will have the sequence of altered bases.
  • During translation, the mRNA codons will encode at least one different amino acid.
  • The structure of the synthesized protein, which will be altered by changes in its amino acid sequence.

In summary, the <u>deletion of a base in the DNA</u><u> will affect the </u><u>protein</u><u> to be synthesized by </u><u>changing the amino acid sequence</u><u> of its structure</u>.

The other options are not possible, because the deletion of a base in the DNA of a gene

<em>     Does not influence the number of chromosomes that the gametes will have. </em>

<em>     It does not produce long chains in the chromosomes. </em>

<em>     It does not affect the ribose structure of the nucleic acids.</em>

8 0
3 years ago
Explain at least three ways in which a mutation in an individual's DNA could occur, and describe at least 2 effects a mutation c
krek1111 [17]

Answer:

Mutations can occur from the following ways:

1. Errors that occur in DNA replication during cell division

2. Exposure to high-energy electromagnetic radiation

3. Exposure to chemicals mutagens

Effects of mutation include:

1. Genetic disorders

2. Cancers

Explanation:

A mutation is a change or alteration that occurs in the DNA sequence of a cell of an organism. These mutations can be passed on to offsprings of that organism. Mutations can occur from the following ways:

1. Errors that occur in DNA replication during cell division: during the process of cell division, the DNA in cell are copied many times. Some errors result when copying DNA, most of which are corrected during proofreading. However, some changes in the DNA sequence may not be corrected, thus resulting in a mutation.

2. Exposure to high-energy electromagnetic radiation: some types of electromagnetic radiation are ionizing, such as UV rays and X-rays. Prolonged exposure to these ionizing radiation may result in permanent damage to parts of the DNA, thereby resulting in a mutation.

3. Exposure to chemicals mutagens: mutagens are substances which are able to cause mutations. Some common chemical mutagens are alkylating agents such as ethylmethane sulfonate and N-methyl-N-nitrosourea.

Effects of mutation include:

1. Genetic disorders: in genetic disorders, certain normal functioning of the body processes are impaired. For example, hemophilia whereby blood lacks the ability to clot normally resulting in excessive bleeding.

2. Cancers: cancers occur when the cell of the body differentiate and grow abnormally. Various types of cancers include breast cancer, prostrate cancer, blood cancer etc.

3 0
3 years ago
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