Would you expect the presence of spacer DNA to increase or decrease the frequency of linkage between genes?
A) decrease it, because the spacer DNA is removed from the genome before transcription
B) decrease it, because the spacer DNA increases the probability of crossing-over between genes
C) increase it, because the spacer DNA is tightly connected to the genes on both sides
D) increase it, because the spacer DNA encourages the insertion of transposons into the DNA

Question

Quizplus · Accepted Answer

Spacer DNA increases the physical distance between genes, making it more likely that crossing-over will occur between them during meiosis. This can result in the recombination of alleles and a decrease in the frequency of linkage between genes.

Would You Expect the Presence of Spacer DNA to Increase