Question

Polyembryony commonly occurs in.
A)Banana
B)Tomato
C)Potato
D)Citrus

Answer 1

Hint: In polyembryony, the embryos are similar to each other due to the embryos arising from the same egg, but are genetically distinct from the parents. The multiple embryos of polyembryony ultimately give birth to only a single offspring in certain plant taxa.

Complete answer:
Polyembryony is the occurrence of two or more embryos emerging from a single fertilized egg. Because of the embryos that come from the same cell, the embryos are identical to each other but are genetically. Polyembryony refers to the case of producing more than one embryo in the same seed. There are 2-40 embryos in a seed, one regular embryo and the rest of the adventive embryos in Citrus (mostly nucellar).

There are a variety of species in the genus Citrus that undergo polyembryony, where alongside sexually derived embryos there are several nucellar-cell-derived embryos. When the seed in Citrus was found to have two germinating embryos, Antonie van Leeuwenhoek first described polyembryony in 1719. Polyembryony is genetically regulated in Citrus by a common locus of polyembryony among the species, determined by single-nucleotide polymorphism in the sequenced genotypes. The difference between citrus species is dependent on the quantity of embryos that grow, the environmental effects, and the expression of genes.

Hence, the correct answer is option (D)

Note: Armadillos are the most well-studied polyembryonic vertebrate, with six armadillo species in the Dasypus genus that are all polyembryonic. For example, the nine banded armadillo always gives birth to four similar young people.