What is the effect of chromosomal deletion?

What is the effect of chromosomal deletion?

• A. Gain of additional genetic information
• B. Loss of a portion of a chromosome
• C. Complete destruction of the chromosome
• D. Formation of a new chromosome

Answer: (B)

The effect of chromosomal deletion is accurately described by the loss of a portion of a chromosome. When a segment of DNA is lost from a chromosome, it results in missing genetic information that can affect gene function and expression. This loss can lead to various health issues, developmental problems, or genetic disorders, depending on what genes are affected. Chromosomal deletions can occur during DNA replication or can result from environmental factors, and they can vary in size, affecting one or more genes. Depending on the size and location of the deletion, the consequences for the organism can range from benign to severe. The other choices do not accurately represent the effect of chromosomal deletion. Gaining additional genetic information, complete destruction of the chromosome, or formation of a new chromosome does not occur as a direct result of deletion. Instead, deletion specifically refers to the event of losing genetic material.

The effect of chromosomal deletion is accurately described by the loss of a portion of a chromosome. When a segment of DNA is lost from a chromosome, it results in missing genetic information that can affect gene function and expression. This loss can lead to various health issues, developmental problems, or genetic disorders, depending on what genes are affected.

Chromosomal deletions can occur during DNA replication or can result from environmental factors, and they can vary in size, affecting one or more genes. Depending on the size and location of the deletion, the consequences for the organism can range from benign to severe.

The other choices do not accurately represent the effect of chromosomal deletion. Gaining additional genetic information, complete destruction of the chromosome, or formation of a new chromosome does not occur as a direct result of deletion. Instead, deletion specifically refers to the event of losing genetic material.