Extract the answer to the question from the following context. Question: What are the problems connected with the study? Context: Because of the great diversity found in animals, it is more economical for scientists to study a small number of chosen species so that connections can be drawn from their work and conclusions extrapolated about how animals function in general. Because they are easy to keep and breed, the fruit fly Drosophila melanogaster and the nematode Caenorhabditis elegans have long been the most intensively studied metazoan model organisms, and were among the first life-forms to be genetically sequenced. This was facilitated by the severely reduced state of their genomes, but as many genes, introns, and linkages lost, these ecdysozoans can teach us little about the origins of animals in general. The extent of this type of evolution within the superphylum will be revealed by the crustacean, annelid, and molluscan genome projects currently in progress. Analysis of the starlet sea anemone genome has emphasised the importance of sponges, placozoans, and choanoflagellates, also being sequenced, in explaining the arrival of 1500 ancestral genes unique to the Eumetazoa.
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Answer: many genes, introns, and linkages lost

Extract the answer to the question from the following context. Question: Why might it be a good idea to remove data in audio signals? Context: In lossy audio compression, methods of psychoacoustics are used to remove non-audible (or less audible) components of the audio signal. Compression of human speech is often performed with even more specialized techniques; speech coding, or voice coding, is sometimes distinguished as a separate discipline from audio compression. Different audio and speech compression standards are listed under audio coding formats. Voice compression is used in internet telephony, for example, audio compression is used for CD ripping and is decoded by the audio players.
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Answer: remove non-audible (or less audible) components of the audio signal

Extract the answer to the question from the following context. Question: How long do wrestlers have to step back in to start the counting over? Context: A countout (alternatively "count-out" or "count out") happens when a wrestler is out of the ring long enough for the referee to count to ten (twenty in some promotions) and thus disqualified. The count is broken and restarted when a wrestler in the ring exits the ring. Playing into this, some wrestlers will "milk" the count by sliding in the ring, and immediately sliding back out. As they were technically inside the ring for a split second before exiting again, it is sufficient to restart the count. This is often referred to by commentators as "breaking the count." Heels often use this tactic in order to buy themselves more time to catch their breath, or to attempt to frustrate their babyface opponents.
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Answer:
a split second