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Aleonysh [2.5K]
3 years ago
14

3. How does chemical evolution explain the origin of life on Earth?

Biology
1 answer:
Ymorist [56]3 years ago
7 0

Answer and explanation:

The theory of chemical evolution is one of the most important theories for understanding the origin of life.

This theory admits that life is the result of reactions envolving inorganic compounds that have combined and formed some organic molecules, such as amino acids, nitrogenous bases and fatty acids.

The organic molecules were then combining, until the first particles with some type of metabolism appeared.

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Two parents both have the genotype gg for a genetic disorder caused by a recessive allele. what is the chance that any of their
mel-nik [20]
100% because all four are recessive. The case would be different if one of the parents were to have the genotype GG or Gg because G is a dominant allele but since all the alleles are recessive, the chance is 100%

Answer: 100%

Hope this helped!
7 0
3 years ago
The sternal angleis the least likely part of A. the sternum to fracture in the elderly. B. occurs at the sternoclavicular joint.
Bumek [7]

Sternal angle marks the joint between the sternum and the 2nd rib.

Option E.

<h3><u>Explanation:</u></h3>

Sternum is the breast bone which is a dorsi ventrally flattened bone present in thorax of human. It gives the support for the ribs where the ribs join. A sternum has three parts - Manubrium sterni, body of sternum and the xyphoid process.

The sternum has attachments of a total of 10 ribs and clavicle. The clavicle and the first rib joins in the Manubrium sterni, and the 3rd to 10th rib joins in the body of sternum. The 2nd rib joins in a facet which is partly in Manubrium sterni and partly in body of sternum. This place id also called the sternal angle. So the sternal angle marks the joint of 2nd rib to sternum.

3 0
4 years ago
Which cell is the precursor to eukaryotic in evolution of the cell
masya89 [10]

The first organisms to inhabit Earth were prokaryotes that lived 3.5 billion years ago. prokaryotes are well organised, achieving all of an organism’s life functions within a single cell. These were the precursors to eukaryotic cells

7 0
3 years ago
I NEED HELP WITH ALL PLZ PLZ
viva [34]
Water freezes at 0°C, the lowest possible temp for any material is absolute zero and also most of these u can just google good luck!
3 0
3 years ago
Why does the length of the gene determine length of the mRNA?
valkas [14]

Answer:

mRNA is essentially a translation of the gene or DNA, each codon has 3 sets of amino acid sequence of protiens.

Explanation:

Therefor the length of the gene and how many codons are included and need to be translated in the specific gene effects how long the mRNA will be.

3 0
4 years ago
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