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Question

Crossing over in diploid organism is responsible for


  1. Linkage between genes
  2. Segregation of alleles (genes)
  3. Recombination of linked allele (genes)
  4. Dominance of genes

A
Dominance of genes
B
Recombination of linked allele (genes)
C
Linkage between genes
D
Segregation of alleles (genes)
Solution
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  • In organisms, one chromosome equals one linkage group. A diploid organism contains a pair of similar chromosomes called the homologous chromosomes, that is, traits are represented in pairs along the same loci of the homologous chromosomes and each chromosome has multiple traits represented by genes, that form the linkage group.
  • During the prophase I of Meiosis I, the exchange of genetic material takes place between two non-sister chromatids of a homologous pair, which changes the composition of the linkage group also known as recombination of the linked allele.

So, the correct answer is 'Recombination of linked allele (genes)'

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