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Maria81
A chromosome deletion occurs when a chromosomal fragment is lost. Thus the chromosome is missing some genes. One example of this in humans is know as cry of the cat. It occurs from a deletion on a chromosome number 5. A child that is born has a mental disability a small head with unusual facial features and cries like the sound of a distressed cat. The children rarely live into adulthood.
I hope this help
yves379

The choices are:

Part of a chromosome breaks off and does not reattach.

It results in the loss of one or more genes.

DiGeorge syndrome occurs when part of chromosome 22 is deleted.

DiGeorge syndrome causes cleft palate, immune deficiency, developmental issues, and learning difficulties.

100% right.


Hope it helps!

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