AP BIOLOGY

Detailed explanation-1: -The smallest unit that is capable of undergoing recombination or crossing over corresponding to a single nucleotide is called a recon. These represent the specific locations within a gene that participates in recombination. A recon consists of several smaller units, mutons which represent the unit of mutation.

Detailed explanation-2: -We use the unit centimorgan (cM) to measure distance between genes based on offspring phenotype frequency. A centimorgan = 100 times the frequency of crossovers in the offspring. In this example, the frequency of crossovers is 10/100 and the distance between the genes is 100 * 1/10 = 10 centimorgans.

Detailed explanation-3: -> Option A: Recon: It is the elementary unit for genetic recombination. It is the distance between two points on a chromosome. It is the minimum distance in which the recombination is possible.

Detailed explanation-4: -The smallest unit capable of undergoing recombination is called as recon. A recon consists of one to several mutants, which are the smallest unit of mutation.

Detailed explanation-5: -In genetics, a centimorgan (abbreviated cM) or map unit (m.u.) is a unit for measuring genetic linkage.