Question

The exchange of segments between non homologous chromosomes is best known as

• A. \( \text{Translation} \)
• B. \( \text{Translocation} \)
• C. \( \text{Recombination} \)
• D. \( \text{Crossing over} \)

Hint:

Remember: Crossing over = Compatible (Homologous). Translocation = Trespassing (Non-homologous).

Answer 1

The Correct Option is B

Concept: Chromosomal rearrangements involve large-scale changes in the structure of chromosomes.
• Crossing over typically happens between homologous pairs.
• When the exchange involves non-matching chromosomes, it is a structural mutation.

Step 1: Distinguishing between homologous and non-homologous exchange.
Crossing over is a normal biological process during Meiosis I between homologous chromosomes. However, when a piece of one chromosome breaks off and attaches to a completely different, non-homologous chromosome, the process is distinct.

Step 2: Defining Translocation.
Translocation is the term used for this specific type of chromosomal abnormality. It can be reciprocal (equal exchange) or non-reciprocal (one-way transfer). This often leads to genetic disorders or certain types of cancers, such as leukemia. Final Answer: The exchange of segments between non-homologous chromosomes is known as Translocation.