Question

12. What is a map unit? Choose the best answer The physical distance between 2 genes on a chromosome, measured in the number of nucleotides (base pairs) between the 2 genes. The distance between 2 genes on a sa le chromosome measured by the % of recombinant-type gametes produced by many individuals e nes) of the same genotype, this is the same as the % of ,ecombinant-type offspring produced in a cross or a double heterozypote with an individual hom ozypous ror two genes. O The number of independent assortment events within a single germ cell undergoing meiosis. 。The % of female fruit nies that undergo crossing over and produce offspring in a test cross, assuming the 2 genes an question are inked The % of meiotic events (% of times germ cells do meiosis) during which chiasmata can be seen.

Answer 1

The second option is the correct one

It is because the map unit a unit of genetic linkage. It basically helps in identifying the distance between chromosome positions which are also known as loci or markers for which the expected average number of chromosomal crossovers is 0.01 in a single generation