FUNBIO 20 - Transmission genetics: Linkage and Crossover

Question 1

Define linkage.

Answer 1

Since homologous recombination involves the exchange of large parts of chromosomes between homologous chromosomes, it is unlikely that genes that are located at loci that are close to each other will undergo recombination between them. Therefore, they tend to assort together, in contrast to the Law of Independent Assortment.

Question 2

Define Chromosome mapping.

Answer 2

Chromosome mapping is assigning a gene or DNA sequence to a particular chromosome or region of a chromosome.

Question 3

Define gene dosage.

Answer 3

Gene dosage is the number of copies of a particular gene present in a genome.