Genes located on the same chromosome are said to be linked; the closer they are, the greater the linkage and the less likely they are to be separated during crossing-over. This concept is called?

Genes located on the same chromosome are said to be linked; the closer they are, the greater the linkage and the less likely they are to be separated during crossing-over. This concept is called?

• A. Linkage
• B. Sickle cell disease
• C. Dominant
• D. Co-dominant

Answer: (A)

Genetic linkage describes the tendency for genes located close together on the same chromosome to be inherited together because crossing-over during meiosis is less likely to separate them. The closer two genes are, the lower the recombination frequency, so they tend to stay linked as a unit rather than assorting independently. The other terms don’t capture this idea: sickle cell disease is a specific trait, while dominant and co-dominant describe how alleles are expressed, not whether genes are linked.

Genetic linkage describes the tendency for genes located close together on the same chromosome to be inherited together because crossing-over during meiosis is less likely to separate them. The closer two genes are, the lower the recombination frequency, so they tend to stay linked as a unit rather than assorting independently. The other terms don’t capture this idea: sickle cell disease is a specific trait, while dominant and co-dominant describe how alleles are expressed, not whether genes are linked.