Question

Plant species A has a diploid chromosome number of 12. Plant species B has a diploid number of 16. A new species, C, arises as an allopolyploid from A and B. The diploid number for species C would probably be

(A) 14.

(B) 16.

(C) 28.

(D) 56.

Short answer

1. The number "14" is false.
2. The number "16" isfalse.
3. The number "28" is true.
4. The number "56" is false.

Step-by-step solution

Allopolyploids

Allopolyploids possess genes from two or more species. It is acknowledged that numerous crop plants are characterized as allopolyploids. This resulted in the speciation of the most recent species from the current living species.

Explanation of option '(A)'

According to the allopolyploid that has been formed by the hybridization of A and B plant species, the diploid number for species C would perhaps be 28, not 14.

Thus, the diploid number for species C would not be 14.

Therefore, the given option is false.

Explanation of option '(B)'

Following the fertilization of plant species A and species B, the allopolyploid has been formed. It is indicated as species C that would perhaps be 28.

Thus,the diploid number for species C would not be 16.

Therefore, the given option is false.

Explanation of option '(C)'

According to the allopolyploid that has been formed by the hybridization of A and B plant species, the diploid number for species C would perhaps be 28.

In the case of plant A, 2n equals 12

In the case of plant B, 2n equals16

So, the value for 2n for a hybridized allopolyploid plant is described as12 plus 16, which equals 28.

Thus,the diploid number for species C would be 28.

Therefore, the given option is true.

Explanation of option '(D)'

The allopolyploid that has been formed by the fertilization of A and B plant species indicates hybrid species C. However, the diploid number for species C would not be 56; it will be 28.

Thus,the diploid number for species C would not be 16.

Therefore, the given option is false.