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which of the following conculisions about mutations in the dna sequence of a gene is most constest with the statement in the box?


A Mutations are always beneficial.

B Mutations are always rapidly occurring.

C Mutations are the only way new species arise.

D Mutations are an important mechanism for the evolution of new species.

Answer:

Earth's creatures are on the brink of a sixth mass extinction, comparable to the one that wiped out the dinosaurs. That's the conclusion of a new study, which calculates that three-quarters of today's animal species could vanish within 300 years.

Explanation:

Answer:

The nuclear membrane encloses the nucleus in eukaryotes. The membrane is penetrated by nuclear pore complexes.

Explanation:

The nuclear membrane (nuclear envelope, nucleolemma) isolates the interior of the nucleus from the cytoplasm. The membrane has two layers enclosing a distinct inner lumen (em). The nuclear membrane is penetrated by large nuclear pore complexes, which selectively transport molecules into or out of the nucleus. The luminal space within the double-layered nuclear membrane is continuous at points with the endoplasmic reticulum, a membrane-enclosed organelle (continuous with the outer nuclear membrane) to which are attached ribosomes (em2) executing translation of genetic coding into polypeptides and proteins.

Type V intermediate filaments are lamin proteins that have a nuclear signal sequence and form a filamentous support called the nuclear lamina just beneath the inner nuclear membrane. The lamina a net-like meshwork array that lines the inner nuclear membrane and governs the shape of the nucleus. Of the three nuclear lamin proteins, two are alternatively spliced products encoded by a single gene, while the third lamin is encoded by a separate gene. Nuclear lamins form a fibrous network that supports the nuclear membrane.

Lamins have a very long rod domain and carry a nuclear transport signal, they are located in the nucleus just beneath the nuclear envelope so they are vital to the re-assembly of the nuclear envelope after cell division. Lamins are phosphorylated at the end of prophase and this causes them to disassemble simultaneous with dissolution of the nuclear envelope. After cell division, they are dephosphorylated just before the nuclei of the daughter cells form and lamin filaments reassemble around each set of chromosomes. They are continuous except for a break at the sites of nuclear pore complexes. Lamins were probably the first intermediate filaments to evolve. Controlled by cdc2 kinase, lamin filaments disassemble prior to or early in mitosis then reassemble after cell division. Phosphorylation of serine residues in the N-terminal domain of lamin A by cdc2 kinase induces the disassembly of intact filaments and prevents reassembly.

Nuclear lamins help attach the chromosomes to the nuclear membrane and provide anchorage points for the nuclear pores. It is believed that nuclear lamins are the evolutionary ancestor of cytoplasmic intermediate filaments, which evolved through duplication and translocation of the gene product to the cytoplasm

Answer:

100%

Explanation:

the only possibilities from HH and hh are: Hh Hh Hh Hh

Domains are classified by scientist Carl Woese on the basis of presence of nucleus in cells, their ability to make food, and the number of cells in organism bodies.

Domain is defined as the highest taxonomic rank in the hierarchical biological classification system, above the kingdom level. There are three domains of life namely the Archaea, the Eucarya and the Bacteria.

Archea do not have a nucleus whereas Eubacteria have a non-enveloped nucleus and Eukarya have enveloped nucleus.

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Answer:

Nervous Tissue

Muscular Tissue

Connective Tissue

Epithelial Tissues

Explanation:

Answer:

6 pies

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Marine resources are presently not renewable because the rate of their use is far greater than their replenishment time.

Renewable resources are those resources which can be replenished when they are used up within a shirt time.

Marine resources refers to those resources found in the marine habitat such as fishes, crabs, mussels, etc.

Marine resources are being used at a rate higher than they can be replenished.

Therefore, marine resources are presently not renewable because the rate of their use is far greater than their replenishment time.

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Answer:

23 Chromosomes

Explanation:

nuclear division begins, and the parent cell is divided in half, forming 2 daughter cells. Each daughter cell will have half of the original 46 chromosomes, or 23 chromosomes.

Answer:

a

Explanation:

Explanation:

Not prosimians , correct result plis

biodiversity

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Answer: Maybe

Explanation:

It depends on the lotions used. Many lotions can have cancer-causing ingredients. If you are using mainstream lotions then there is a decent chance you will use one that can cause cancer.

Answer: teleconferencing

Explanation:

    Using peer-to-peer collaboration will not work if the members work at many different locations.

    While instant messaging may work, it can be hard to have a meeting this way.

     Templates do not apply to this situation.

     This leaves us with the answer of "teleconferencing" as you can have a meeting with people online, even when they are far apart.

Explanation:

Two characteristics are used to define the mammal class. They are mammary glands and body hair (or fur). Female mammals have mammary glands.

Carcinomas that begin in different epithelial cell types have specific names: Adenocarcinoma is a cancer that forms in epithelial cells that produce fluids or mucus. Tissues with this type of epithelial cell are sometimes called glandular tissues. Most cancers of the breast, colon, and prostate are adenocarcinomas.

Competition is the interaction of individuals that for a common resource that is in limited supply, but more generally can be defined as the direct or indirect interaction of organisms that leads to a change in fitness when the organisms share the same resource.

There are two major forms of competition. Two of them are interference competition and exploitation competition are categorized as real competition. Interference competition occurs directly between individuals, while exploitation competition and apparent competition occur indirectly between individuals.

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Answer:

this is my answer Key Takeaways. The nature versus nurture debate involves the extent to which particular aspects of behavior are a product of either inherited (i.e., genetic) or acquired (i.e., learned) influences. Nature is what we think of as pre-wiring and is influenced by genetic inheritance and other biological factors.

Answer:

Lower emissions, lower fuel prices and the reduction of pollution are all advantages that the use of alternative fuels can often provide.

Explanation:

Hope this helps loves x!

Answer:

The Common Sea Fan can be found in patches of reefs and outer areas of the reefs typically in water depths up to 30 meters, and they tend to thrive in areas where the water flow is at a constant speed. The speed of the water is important due to the fact that all sea fans are filter feeders.

Answer:

Because it is a fluid system, the atmosphere is capable of supporting a wide spectrum of motions. These range from turbulent eddies of a few meters to circulations with dimensions of the Earth itself. By rearranging mass, air motion influences otheratmospheric components such as water vapor, ozone, and cloud, which figure prominently in radiative and chemical processes. Such influence makes the atmospheric circulation a key ingredient of the global energy budget.

Explanation:

right off of go ogle

Answer:

D. The turtle and fish are cold-blooded.​

Explanation:

Some cold-blooded animals include insects, worms, fish, amphibians, and reptiles.

All creatures except mammals and birds are cold-blooded.

Answer:

Arteries = Transports blood away from the heart. They carry oxygenated blood away from the heart and to the body with the exception of the pulmonary artery that takes deoxygenated blood from the heart to the lungs to be oxygenated. They have large muscular walls to withstand the pressure of the heart beats and since there is such large pressure, they have smaller lumen compared to the veins as the pressure drives the blood forward.

Veins = Transports blood to the heart. They tend to carry deoxygenated blood to the heart except for the pulmonary vein. Large lumen and small muscular walls with valves. The large lumen is so that more blood can flow through the veins as there's less pressure which is also why there are smaller muscular walls. There are also valves in the veins to prevent the backflow of blood.

Capillaries = Allows gas exchange and waste diffusion into blood. It is also one cell thick to allow diffusion to happen efficiently and the small structure increases the surface area to volume ratio.

Answer:CH3COCOO− + H+ → CH3CHO + CO

Explanation:

Answer:

Option B. makes the most sense to me.

Answer:

Because it is combining or mixing together compounds to make a reaction from even simpler materials, like in photosynthesis.

Answer:

Generation I

1. bb

2. BB

Generation II

1. Bb

2. Bb

3. Bb

4. Bb

Generation III

1. bb

2. BB

Answer:

true

Explanation:

the ozone layer covers the entire planet and protects life on earth by absorbing harmful ultraviolet-B (UV-B) radiation from the sun