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Alexeev081 [22]
3 years ago
8

Although identical twins inherit exact copies of the same genes, the twins may look and act

Biology
1 answer:
ivolga24 [154]3 years ago
4 0

Answer:

Identical twins came from the same sperm and egg, so they have the same chromosomes and genes. So identical twins with identical DNA may have different genes turned on, causing them to look and act differently, and even to develop different diseases such as cancer.

Explanation:

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Arguably, the way prokaryotic operons are structured has evolutionary advantages. Based on our discussions in class, briefly des
Naddik [55]

Answer:

Advantage of gene expression in prokaryotes is it occurs faster than in eukaryotes because  transcription and translation occur simultaneously in the cytoplasm, and regulation occurs at the transcriptional level. Whereas disadvantage of gene expression in prokaryotes is that there is no post translational modification and low expression of genes.

Explanation:

Prokaryotic organisms are single-celled organisms that lack a cell nucleus, and their DNA therefore floats freely in the cell cytoplasm. To synthesize a protein, the processes of transcription and translation occur almost simultaneously. When the resulting protein is no longer needed, transcription stops. As a result, the primary method to control what type of protein and how much of each protein is expressed in a prokaryotic cell is the regulation of DNA transcription. All of the subsequent steps occur automatically. When more protein is required, more transcription occurs. Therefore, in prokaryotic cells, the control of gene expression is mostly at the transcriptional level. whereas in eukaryotes, the DNA is contained inside the cell’s nucleus and there it is transcribed into RNA. The newly synthesized RNA is then transported out of the nucleus into the cytoplasm, where ribosomes translate the RNA into protein. The processes of transcription and translation are physically separated by the nuclear membrane; transcription occurs only within the nucleus, and translation occurs only outside the nucleus in the cytoplasm.

6 0
3 years ago
The walls of the trachea are surrounded by C-shaped rings of cartilage. What is the purpose of this cartilage?
photoshop1234 [79]
The answer is b........
5 0
3 years ago
Who created the "first real theory of evolution" that animals can undergo
Nana76 [90]

Answer:

Jean-Baptiste Lamarck  

Explanation:

Jean-Baptiste Lamarck was a French biologist which developed the first theory to understand how species change (evolve) over time. This evolutionary concept was published under the name of 'Theory of the Transmutation of Species' in the early 19th century. Subsequently, Darwin published his famous and widely accepted evolutionary theory in the book 'On the Origin of Species' (1859).

8 0
2 years ago
What is an alternative stable state? the first species to grow after a severe disturbance after a disturbance, a stable communit
Dima020 [189]

Answer:

In biomes the species community undergoes certain changes in evolution and growth in order to reach the climax.

Explanation:

  • An alternative stable state is one which suggests the discrete states are sperate by an ecological threshold and in opposition to the ecosystem that is changing and thereby stating that the ecosystem can exist in a variety of alternative state.  
  • The first species after origin grows develops and then declines. This community of species may be disturbed in middle such as by a fire or flood and forms the secondary community which is more diamine and resistant. The changes are known as seres in biomes.
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3 years ago
In order for a dam to work, ______ must be present.
VikaD [51]
c . i looked it up l o l
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3 years ago
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