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mash [69]
3 years ago
7

LEADING STRAND OF DNA: TTAGGC WHAT IS THE mRNA strand?

Biology
1 answer:
Virty [35]3 years ago
4 0

Answer:

DNA: 2 strands, Deoxyribose, Nucleus, A pairs with T

RNA: 1 strand, Ribose, Nucleus & Cytoplasm, A pairs with U

Explanation:

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What are some ways you can reduce the number of fishnets in the ocean?
Juliette [100K]

Answer:

August 11, 2014 — Six years ago, the Norwegian coast guard filmed a Scottish fishing vessel riding gray swells, dumping 5 metric tons of dead fish back into the North Sea. Over the European Union catch quota, and so unable to keep all the fish they’d caught, the fishermen had to ditch some. To the Norwegians, who aren’t part of the EU and hold a strict discards ban, the waste was shocking.

When this news reached Dan Watson, a young British designer, it became the inspiration for SafetyNet, an ocean fishing net that allows certain fish to escape via lighted rings, offering more catch selectivity. The Scottish fishermen’s predicament, he believed, was driven by their lack of control. “There can be no villains, there can be no victims, there are just problems,” Watson says. “I started this project because I wanted to go some way towards solving that problem.”

Bycatch can result in overfishing, reduces the population of species that might already be endangered and, on the largest scale, interrupts food chains and damages whole ecosystems.

Watson joins a growing number of innovators designing more selective fishing gear to reduce bycatch — the unwanted fish, dolphins, whales and birds that get scooped up by longlines, gillnets and trawlers each year and then discarded. Globally, the amount of marine life that is wasted or unmanaged — which makes it potentially unsustainable — forms about 40 percent of the catch. “The way we catch now is to catch everything, decide what we want to keep, and discard the rest,” says Martin Hall, head of the bycatch program at the Inter-American Tropical Tuna Commission, which regulates tuna fishing in the eastern Pacific Ocean. Bycatch can result in overfishing, reduces the population of species that might already be endangered and, on the largest scale, interrupts food chains and damages whole ecosystems. It also amounts to an enormous waste of valuable fish protein.

Leatherback turtle caught in net

New fishing net designs aim to reduce bycatch — the unintented capture of small fish, turtles, dolphins, whales, birds and other ocean-going life. Photo by Michel Gunther/WWF-Canon.

To designers building better nets and lines, bycatch isn’t viewed as an inevitability, but as something we can phase out, piece by piece. It’s also seen as a battle that needs to be fought alongside fishermen, not against them.

Rethink the Game

Speaking from his trawler, the 45-foot Proud Mary, off the coast of Massachusetts, one such fisherman, Christopher Brown, says that over the years, fishermen have had to “rethink the game.” Brown operates a fishery that’s almost completely free of discards; is the board president of the Seafood Harvesters of America, an organization representing stewardship-minded fishermen; and has designed a squid net that reduces bycatch. The net contains an escape route at its base that exploits the bottom-dwelling behavior of unwanted flounder, encouraging them to flee the net through this gap. “We need to look at things entirely differently than we have in the last 30 years,” Brown says — and new gear is part of that equation. “It’s a matter of enlightened self-interest.”

Explanation:

Hope it helps

6 0
2 years ago
However, when the proteins formed by the genes have their amino acids sequenced, there is no difference observed between the two
Musya8 [376]

Answer:

The correct answer is: Variation in nucleotide sequences are located in those regions of the gene which do not affect the sequence of the protein due to genetic code degeneracy.

Explanation:

  • Proteins are encoded from the genes located in the chromosomes.
  • The genes are made up of the heritable DNA (Deoxyribonucleic Acid) sequences.
  • These genes are transcribed by the enzyme called RNA polymerase into mRNA (messenger Ribonucleic Acid) sequences in the nucleus.
  • The mRNA is then translated into protein sequences by the Ribosome in the cytoplasm or the RER (Rough Endoplasmic Reticulum).
  • The Ribosome reads the mRNA code in form of triplets, that is, three consecutive nucleotide are read as a single code that encode for a single amino acid. This triplet code that responsible for coding for a single amino acid is called a Codon.
  • The Codons are degenerate in nature. This means that among the three nucleotide in a codon the first two nucleotide is specific for a particular amino acid. The third nucleotide is "wobble" in nature. This means that whatever may be the nucleotide in the third position it will not change the amino acid coded by the first two nucleotide.
  • Hence, a single amino acid is coded by more than one codon.
  • So, gene sequences showing variation in the wobble nucleotide position will encode for the same protein.
8 0
3 years ago
How do feedback mechanisms help maintain homeostasis?
LenKa [72]

it involves negative feedback loop

Explanation:

the loop allows living organisms to maintain homeostasis

3 0
2 years ago
Give two reasons why a wet cell may not be effective?
zheka24 [161]

Answer:

Wet Cell Disadvantages

Wet cell batteries are potentially more dangerous and slower to charge than AGM batteries.

Wet cells emit hydrogen gas during normal operation and especially during charging.

4 0
2 years ago
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Why is meiosis/sexual reproduction important to the survival of a species?
MariettaO [177]

Its important because they produce offspring. Without any offspring the species would slowly die off and become extinct.

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