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AlexFokin [52]
3 years ago
8

Which prokaryotic organism shows up as old as the oldest fossils

Biology
1 answer:
Murljashka [212]3 years ago
5 0
D. Cyanobacteria one of the first beings
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Classify each description as true of introns only, exons only, or both.A-present in eukaryotic genomesB-generally absent from ba
maxonik [38]

The right answers are:

A-present in eukaryotic genomes ==> Both exons and introns

B-generally absent from bacterial genomes ==> Introns

C-part of the final mRNA strand ==> Exons

D-code for an amino acid sequence ==> Exons

E-removed from initial mRNA strand prior to translation ==> Introns

F-present in the DNA used as the template for transcription ==> Both exons and introns

In the genes of eukaryotic organisms, the exons are the segments of an RNA precursor that are conserved in the RNA after splicing and that are found in mature RNA in the cytoplasm. The segments of the RNA precursor that are removed during splicing are called in opposition to introns. Exons are mainly found in messenger RNAs (mRNAs) encoding proteins. Some mRNAs may sometimes undergo an alternative splicing process in which one or more exons may be excised or some introns preserved in rare cases.

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The pine cone seed is the:
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Answer:

Yes you are right it is the 3rd one ( container for the fertilized egg).

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creo que es la D

Explanation:

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Two fruit flies that are heterozygous for body color and eye color are crossed. Brown body color is dominant to black body color
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In a double cross of two heterozygotes for both traits ( BrBl  Rbx BrBl  Rb) we would get a <span>9:3:3:1 phenotypic ratio.
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3 black body, red eyes ( one recessive and one dominant trait)
1 black body, brown eyes ( both recessive traits)</span>
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Which characteristic of the outer core makes it unique among the other layers of Earth?
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The outer core is the third layer of the Earth. It is the only liquid layer, and is mainly made up of the metals iron and nickel, as well as small amounts of other substances. ... These powerful currents cause lines of invisible force to stretch around the Earth and thousands of miles into space, creating a magnetic field.

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2 years ago
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