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Dominik [7]
3 years ago
6

How do fossils lend evidence in support of the Theory of Evolution?

Biology
1 answer:
Wittaler [7]3 years ago
5 0
Evidence of the past life preserved in rocks . This overlap of dna suggested we all derived from a common ancestor
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explain what DNA is and how the model of DNA developed .You should include information on how genetic information is carried ,as
jolli1 [7]

Answer:

DNA is a Deoxyribose nucleic acid and our Dna strand is double helix

Explanation:

I kow this because if you close you see two strands

7 0
3 years ago
What is another word for cytosol
snow_tiger [21]
Another word for cytosol  is cytoplasm.
4 0
3 years ago
We would expect that a 15-nucleotide sequence that includes a stop codon at the end (as part of the 15-nucleotide sequence) will
slega [8]

Answer: Four amino acids.

Explanation:

RNA (ribonucleic acid) and DNA (deoxyribonucleic acid) are polymers made up of long chains of nucleotides. Thus, a nucleotide is the basic building block of nucleic acids and consists of a sugar molecule (ribose in RNA or deoxyribose in DNA) linked to a phosphate group and a nitrogenous base. <u>The nitrogenous bases can be Adenine (A), Thymine (T), Cytosine (C), Guanine (G) or Uracil (U) replacing T in RNA</u>. DNA is the molecule that stores the genetic information to synthesize polypeptides or proteins (set of amino acids). When proteins need to be created, DNA is transcribed into RNA and this RNA is translated in ribosomes to create polypeptides.

Complementarity is the ability to combine with their complement. A and T (or U) are complementary, while C and G are complementary to each other. Complementarity is the principle of replication and transcription, because it is a propery of both DNA and RNA sequences. Their the nucleotide bases at each position of the sequences are complementary, allowing cells to copy information.

Nucleotides in RNA are grouped into codons, which consist of groups of 3 nucleotides where each codon codes for an amino acid. Therefore, <u>the sequence of bases in nucleic acids determines which protein will be synthesized</u>. Protein synthesis begins with a start codon (AUG, which codes for the amino acid methionine) and ends with a stop codon (UGA, UAG and UAA). So, if there are 15 nucleotides, there are 15 bases. Since they are grouped in groups of 3, we will have a polypeptide of 4 amino acids.

<u>3 nucleotides form a codon, so 12 nucleotides form 4 codons giving 4 amino acids. The last codon, is formed by the last 3 nucleotides and form the stop codon that stop protein synthesis</u>.

7 0
3 years ago
Two umbilical arteries leave the __________ of the fetus, enter the umbilical cord, and deliver blood to the placenta.
Aloiza [94]

Answer:

internal iliac arteries

Explanation:

6 0
3 years ago
mr. and mrs. zuhl were professional fossil collectors why my not they have collected precambrian fossils
Reptile [31]
The precambrian era makes up about 90% of the earths history, but there was little to no living organisms at the time other than microscopic ones. The first eukaryotes were found in the cambrian period after the precambrian period, not only that but at the end of the precambrian era in the Proterozoic era there was a mass extinction of about 70-80% of all living organisms

5 0
3 years ago
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