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Question
In rice, chromosome number is 2n = 24. The number of linkage groups in it shall be
In rice, chromosome number is 2n = 24. The number of linkage groups in it shall be
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Solution
The correct option is C 12
A linkage group is defined as a group consisting of genes present at different loci on a single chromosome. These are inherited together as a unit from parents to offspring. The number of linkage groups is the number of different chromosomes present in the genome. Since the diploid number is 24, hence the haploid set has 12 chromosomes. In other words, there are 12 pairs of homologous chromosomes. It can be represented by:
n=12, where n is the number of chromosomes in a haploid set.
Since each of the homologous chromosomes carries alleles of the same gene at corresponding loci, hence, there are 12 different types of chromosomes present in the plant. Hence, the number of linkage groups = 12.
A linkage group is defined as a group consisting of genes present at different loci on a single chromosome. These are inherited together as a unit from parents to offspring. The number of linkage groups is the number of different chromosomes present in the genome. Since the diploid number is 24, hence the haploid set has 12 chromosomes. In other words, there are 12 pairs of homologous chromosomes. It can be represented by:
n=12, where n is the number of chromosomes in a haploid set.
Since each of the homologous chromosomes carries alleles of the same gene at corresponding loci, hence, there are 12 different types of chromosomes present in the plant. Hence, the number of linkage groups = 12.
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