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A CRI (Color Rendering Index) unit measures the ability of a light source to accurately represent colors compared to natural light. A high CRI value indicates better color accuracy, while a low CRI value means colors may appear distorted or dull under that light source.

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1y ago

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Which condition is caused by chromosomal deletion?

One condition caused by chromosomal deletion is Cri-du-chat syndrome, which results from a deletion on the short arm of chromosome 5. This syndrome is characterized by intellectual disability, distinctive facial features, and a cat-like cry in infants.


Is there a pedigree for cri-du-chat?

Cri-du-chat syndrome is a genetic disorder caused by a deletion in chromosome 5. It is not typically inherited in a Mendelian pattern but rather occurs sporadically. However, if a parent carries a balanced translocation involving chromosome 5, there may be a risk of passing the deletion on to offspring.


Who is affected by cri du chat syndrome?

Cri du chat syndrome affects individuals who are born with a missing piece of chromosome 5. This genetic condition can lead to intellectual disability, speech and motor delays, distinctive facial features, and other physical and developmental challenges. It occurs randomly and can affect individuals of any race or ethnicity.


What is the area of one unit?

The area of one unit is one unit2. one unit * one unit = one unit2


Why is cri-du-chat neither recessive or dominant?

Even though around 10% of cri-du-chat patients may have gotten the deletion from a parent (if the parent has something called a balanced translocation, which does not cause problems and would not otherwise be diagnosed), it is usually a randomly occurring deletion of part of a gene. That means that it happens without a family tendency or condition, and occurs very early in fetal development. A gene which is recessive or dominant is a "whole" gene that is either expressed or not expressed in the offspring. Though it may seem like a random occurrence when you have a child with blue eyes, or red hair, those traits can be traced back through the family. Not so with a condition like cri-du-chat. It is one of those unfortunate random events that occur in nature, and can be very severe or not too severe, depending on how much genetic material is lost.