Answer:
The correct answer would be C) stem.
Modified stems are used as storage organs in potato plant. They are also termed as stem tubers.
They are formed from thickened stolons or rhizomes.
They help in perennation and provide nutrients and energy for regrowth during the following growing season.
The underground tuber survives the winter until spring and help in regeneration of new shoots.
The new shoot uses the food stored in the tuber to grow.
Double and single strands
Nondisjunction is most likely responsible for the failure of a gamete to receive a copy of a particular chromosome.
What is non-disjunction?
When a pair of homologous chromosomes fails to segregate or separate at anaphase, both of the pair's chromosomes pass to the same daughter cell. This most likely happens during meiosis, but it can also happen during mitosis to create a mosaic individual. These are some potential causes of nondisjunction, while the exact cause or causes are unknown. Growing maternal age is linked to trisomy 21 and trisomy 18 fetuses and newborns, indicating that the mother's age may be a significant etiological component. Chromosomal structural defects such translocations and pericentric inversions might hinder chromosome pairing during meiosis and encourage nondisjunction.
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