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sammy [17]
3 years ago
9

Carbon is the basis for life on earth because it _____.

Biology
1 answer:
dmitriy555 [2]3 years ago
4 0
I think the answer is A. forms many organic molecules :)
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To trace our maternal lineage, we observe mutations that have accumulated in our mitochondrial dna (mtdna). in the dna isolation
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In the coding region, natural selection tends to eliminate all of the mutations because of the high importance these regions have. The coding region contains genes that synthesize proteins and the changes in the DNA sequence can have devastating effects on the cell. Therefore, there are very few differences in the sequences of coding regions that can help us trace the lineage.
On the other hand, in the non-coding regions, the mutations often accumulate because they have little effect on the cell and the adaptive value of the organism. This enables us to trace up the lineage by comparing the sequences and seeing the differences in the sequences. 
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3 years ago
The mass number of an atom is the same as?
Darina [25.2K]

Answer: Option C.

The number of protons and neurons it's contain.

Explanation:

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Examples of vestigial structures include the human appendix, the pelvic bone of a snake, and the wings of flightless birds. Vestigial structures can become detrimental, but in most cases these structures are harmless; however, these structures, like any other structure, require extra energy and are at risk for disease.

Explanation:

sincerely, micah

5 0
2 years ago
What is a zygote?
tekilochka [14]

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A

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3 years ago
What term is used to describe organisms composed of identical and unspecialized cells?
Sedaia [141]

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Embryo cell or totipotent cell

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All organisms during their embryonic stage also known as totipotent cells are composed of cells that are identical in structure and function. These cells can differentiate at a later stage and have the potential to become any cell i.e heart cell, eye cell etc. Embryo is thus just a mass of unspecialized cell which undergo differentiation to then convert into pluripotent and form tissues and hence the organ.

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