Multiple alleles are present :-a)In different chromosomesb)At different loci on chromosomec)At the same locus on homologous chromosomesd)At the non homologous chromosomeCorrect answer is option 'C'. Can you explain this answer?

Question

Answer

The term 'multiple alleles' is referred to as the presence of three or more alleles for a particular gene. These alleles are present on the same locus of the homologous chromosome.
Eg:
In humans, the condition of multiple allelism is best illustrated by the ABO blood group system.
So correct answer is (c).

Answer

Multiple alleles are present in same locus on homologous chromosomes...ex:blood grops

Answer

Multiple alleles are present at the same locus on homologous chromosomes.

Explanation:

Multiple alleles refer to the presence of more than two alternative forms of a gene at a specific locus or position on a chromosome. These multiple alleles can exist in a population, but an individual can only carry two alleles, one on each homologous chromosome. The term 'allele' refers to different versions or variations of a gene that code for different variations of a particular trait.

At the same locus on homologous chromosomes:
- Homologous chromosomes are paired chromosomes that carry the same genes at the same loci, one from each parent. They are similar in size, shape, and carry genes for the same traits.
- Loci are the specific positions on a chromosome where a particular gene is located.

When we say multiple alleles are present at the same locus on homologous chromosomes, it means that different versions or variations of a gene can occupy the same position on homologous chromosomes. This situation arises when there are more than two possible alleles for a specific gene in a population.

Examples of multiple alleles in humans include the ABO blood group system and the HLA (human leukocyte antigen) system. In the ABO blood group system, there are three alleles for the gene that determines blood type: A, B, and O. An individual can have two different alleles from among these three, resulting in different blood types (A, B, AB, or O).

In summary, multiple alleles are present at the same locus on homologous chromosomes. This means that different variations of a gene can occupy the same position on paired chromosomes, allowing for the existence of more than two alleles for a particular gene in a population.

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