Genetics. Because it it a branch of biology that was concerned with the study of genes
The correct answer to
this is:”
<span>The dog is
demonstrating <u>“extinction response.”</u></span>
<span>Extinction in
psychology is the loss of a previously learnt behavior when the behavior is not
reinforced. In this case, the dog was previously taught to salivate in response
to the sound of the tone by giving him food. As the researcher continues to
give the sound but no food, the salivation has become extinct.</span>
Answer:
The endosymbiotic theory states that some of the organelles in today's eukaryotic cells were once prokaryotic microbes. In this theory, the first eukaryotic cell was probably an amoeba-like cell that got nutrients by phagocytosis and contained a nucleus that formed when a piece of the cytoplasmic membrane pinched off around the chromosomes. Some of these amoeba-like organisms ingested prokaryotic cells that then survived within the organism and developed a symbiotic relationship. Mitochondria formed when bacteria capable of aerobic respiration were ingested; chloroplasts formed when photosynthetic bacteria were ingested. They eventually lost their cell wall and much of their DNA because they were not of benefit within the host cell. Mitochondria and chloroplasts cannot grow outside their host cell.
Explanation:
<span>The amino acid is cysteine. Cysteine has a thiol group as its side chain, and the oxidation of these thiol groups allows for the formation of disulfide bridges between two cysteins to occur in proteins. The formation of a disulfide bridge increases the rigidity of the protein's folded structure, helping to maintain the protein's structure and to prevent unfolding. While the reducing environment found within the cell often prevents the formation of these disulfide bridges by preventing oxidation these bonds can form in the extracellular environment, and so the disulfide bridges formed by cysteines contribute to maintaining cellular stability outside the cell.</span>
This will be a major concern to transgenic crop manufacturers because
outcrossing can lead to loss of introduced genes from transgenic plants.
Outcrossing involves the process of crossing two different breeds thereby
introducing unrelated genetic material into it.
Crop manufacturers will be concerned if the genes from genetically modified
corn frequently move to non-genetically modified corn plants because as time goes on, the trait which made the genetically modified corn will be lost as different variations and more dominant traits will make such traits recessive and lost.
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