Question

In a multiple allele system gamete possesses
A. Two allele
B. Three allele
C. One allele
D. Several alleles

Answer 1

Multiple allele systems exist in a population when there are many variations. More than two alternative alleles of a gene are called multiple alleles. Multiple alleles are genes with more than one allele. Multiple alleles mean three or more alternative forms of genes called alleles. They occupy the same locus.

Complete answer:
Option A Two allele: In a multiple allele system, we can see that in each gamete there contains one allele. A gene contains a pair of alleles that are ready to express themselves. In a multiple allele system gamete possesses not two alleles. Multiple alleles mean more than three or more alternative forms of genes. But a gamete possesses only one allele.
Option A is incorrect.
Option B Three allele: In a multiple allele system, we can see that each gamete contains only one allele. We can see Multiple alleles in the same locus of the chromosomes. Multiple alleles mean three or more alternative alleles in a gene. A gamete possesses only one allele.
Option B is incorrect.
Option C is One allele. In a multiple allele system, we can see that each gamete contains only one allele. The example of multiple alleles can be found in the ABO blood group system. An individual can possess two alleles at a time. Even though there are three or more alternative alleles. Gamete only possesses one allele. When the gametes of opposite genders fuse, the resulting zygote will have a pair of alleles and the gene contains a pair of alleles that is thus ready to express.
Option C is the correct answer.
Option D is Several alleles: This is absolutely wrong because, in a multiple allele system, we can see that each gamete contains only one allele. Even though one individual can possess and can have only two alleles at a time.
Option D is incorrect.

So, the correct answer is Option C. In a multiple allele system gamete possesses one allele.

Note:
In a multiple allele system gamete possesses one allele. Hence when the gametes of the opposite gender fuse the resulting zygote will have a pair of alleles.
Let’s look at an example:
The tallness of the plant $+$ seed color
T-tall dominant and t- short recessive
R- red dominant and r - yellow recessive.
The genotype of parents: TTrr $\times$ ttRR
Gametes: Tr, tR
$F1$ : TtrR