Figure 5.16. The effect of a crossover on linked genes.

Figure 5.16The effect of a crossover on linked genes

The drawing shows a pair of homologous chromosomes, one red and the other blue. A and B are linked genes with alleles A, a, B and b. On the left is a meiosis with no crossover between A and B: two of the resulting gametes have the genotype AB and the other two are ab. On the right, a crossover occurs between A and B: the four gametes display all of the possible genotypes: AB, aB, Ab and ab.

From: Chapter 5, Mapping Genomes

Cover of Genomes
Genomes. 2nd edition.
Brown TA.
Oxford: Wiley-Liss; 2002.
Copyright © 2002, Garland Science.

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