Chromosome mapping explain briefly in genetics or
Answers
ANSWER:-
CHROMOSOME MAPPING:-
□ The diagramatic representation of relative distance between linked genes of a chromosome is called chromosome map or linkage map.
□ The first chromosome map was constructed by crossing over.
□ Chromosome map shows the order of location of genes on the chromosome and their distance between each other.
□ The crossing over between two genes near each other is directly proportional to the distance between them.
□ For constructing a chromosome map, the relative distance between each linked genes have to be determined.
□ The distance between the genes can be expressed in map unit.
□ Map unit is calculated according to the percentage of crossing over.
□ If the percentage of crossing over between two linked genes is one percentage, then it means that the distance between two linked genes is one map unit.
