Q.Which one of the following hydrolyses internal phosphodiester bonds in a polynucleotide chain?

Genes close together on one chromosome that are inherited together are called linked genes.

According to the chromosomal theory of inheritance, genes are arranged linearly along chromosomes, and genes located physically close to one another on the same chromosome have a low probability of being separated by crossing over during meiosis; as a result they tend to be transmitted together to offspring as a unit, a phenomenon called linkage, and such genes are termed linked genes. This deviates from Mendel's law of independent assortment, which strictly applies only to genes on different chromosomes (or very far apart on the same chromosome) -- these are called unlinked genes because they assort into gametes independently of one another. 'Syntenic' is a related term meaning genes are located on the same chromosome, but it does not specifically emphasise the clos …