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In: Biology

In section 7.3 we learn about errors that can occur in the process of meiosis, and...

In section 7.3 we learn about errors that can occur in the process of meiosis, and several types of errors are mentioned. Select of these types of errors (e.g. chromosome number, non-disjunctions, etc.) and provide a brief description of the error (in your own words). Then do a little bit of online research related to the type of error and identify and describe one disease or condition that can result from this type of error (example – Trisomy 21 is where there is an extra chromosome in the 21st pair, and is responsible for the condition of Down Syndrome). Be sure to describe the symptoms and any treatments that are associated with the condition you select. The concept of DNA replication is a complicated one – and often pretty difficult for us to visualize/grasp. Review 9.2 regarding DNA replication and then do some online searching to find a reference or resources (not one of the ones on Padlet) that does a good job of explaining this process. In your post, identify: One aspect of process of the DNA replication that the video/animation does a good job of describing, or that made things easier to understand (for instance, if you didn’t understand what Okazaki fragments were and a video you find helps explain it, describe what makes the concept more understandable in the video/animation) At least one aspect of the process.

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Expert Solution

One of the errors that can occur during meiosis is the 'chromosomal deletion'. During the process of meiosis. an event known as crossing over occurs. During this event, an arm or a part of the chromosomal arm may be completely lost/ deleted during this process. Such an event leads to the development of multiple disorders in the infant based on the chromosome that has been deleted.

One such example of chromosomal deletion during the process of meiosis is the 'Cri-du-chat syndrome'. This syndrome can be seen in the children with the deleted short arm of the chromosome 5. This syndrome is associated with the abnormalities of the nervous system and identifiable physical features. The affected child emit a high-pitched cat like cry.

Since, the affected child suffers from poor muscle tone and undeveloped speech, the treatment involves physiotherapy and speech therapy so that the muscle tone and speech abilities of the child can be improved.


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