Answer:
All the statements about DNA recombination are true.
Explanation:
Recombination can be defined as any process in which the formation of new DNA from different molecules takes place, so that the genetic information derived from each original DNA molecule will be present in the new ones. Allows random rearrangement of genes within and between chromosomes.
It constitutes a source of genetic variability and physical exchange of segments. It has regulatory value, since it can result in the activation or inactivation of genes and is also a repair pathway.
There is general or homologous recombination, which occurs between substrates with extensive homology.
Site-specific recombination, where there is an exchange of two specific DNA sequences.
And transposition, which involves a short segment of DNA that moves from one place to another on the same or different chromosome.
The population of cactus dwelling birds will decrease and that of the animal they eat will increase.
Explanation:
When cacti is removed from the desert ecosystem, the birds that have their nest on the cacti will no longer have a home so they will migrate to other areas with favorable ecosystem.This will reduce the number of birds in this ecosystem.In turn, the animals that were feed by the birds will have the chance to multiply in numbers because a predator has been removed in the ecosystem.
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Keywords : Ecosystem, population
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<span>West Nile virus is mostly spread through infected mosquitoes, which is likely how these other patients were infected. Other possible but unlikely ways include blood transfusions and organ transplants, so the physician would likely be able to track down whether Peter donated any blood during his recent hospital visits.</span>
Answer:
option A
Explanation:
The protein specific sequence also known as the primary sequence is determined by the sequence of its amino acids linked together by peptide bonds. The sequences of amino acids determine the proteins that will eventually be synthesized. This proteins becomes functional when correct folding pattern/ native conformation of the protein occurs which determines the shape of the proteins. peptide bonds hold the amino acid sequences together, hydrogen bonds involving components of the peptide bonds allow for the existence of the secondary structure either the alpha helix or the beta pleated sheets and then disulphide bonds and other type of bonds helps in the folding of the protein to become a functional protein.
1. The elements that are most abundant in living organisms are <span>oxygen, nitrogen, carbon, hydrogen, sulfur, and phosphorus. The answer to your question is D.
2. </span>Carbon is so abundant in living things when oxygen is the most abundant element on Earth because carbon atoms can bond with one another to make chains and cyclic structures whereas oxygen atoms cannot form chains or cyclic structures. <span>The answer to your question is A.
3. </span>A protein is different from a complex carbohydrate because the monomers that make up a protein vary whereas the monomers that make up a complex carbohydrate are all the same. <span>The answer to your question is A.
4. The </span>macromolecules which would have to be discovered in this creature before scientists could suggest that life on Earth and life on Mars have similar methods for storing and transmitting genetic information is the polynucleotide. <span>The answer to your question is D.
5. The </span>type of macromolecule that might be is <span>lipid. </span>The answer to your question is C.
I am hoping that this answer has satisfied your query and it will be able to help you in your endeavor, and if you would like, feel free to ask another question.
