Haploid (n)
The ploidy of the gametes produced by a tetraploid individual with nondisjunction of all chromosomes during meiosis would be diploid. This is because, in nondisjunction, the chromosomes do not separate properly, leading to the formation of gametes with double the normal chromosome number.
Ploidy reduction is a process in which the number of sets of chromosomes in a cell is reduced. This can happen during meiosis, the process of cell division that produces gametes (sperm and egg cells) with half the normal number of chromosomes. Ploidy reduction is important for sexual reproduction to maintain the correct chromosome number in the offspring.
Animal cells that are capable of meiosis are typically diploid, meaning they have two sets of chromosomes. During meiosis, these diploid cells undergo two rounds of cell division to produce haploid gametes with only one set of chromosomes.
A somatic cell, except for gametes, used in reproduction.
The ploidy of the zygote produced by fertilization is typically diploid (2n), as it results from the fusion of two haploid gametes—one from the mother and one from the father. Each gamete contributes one set of chromosomes, so the zygote contains two sets, one from each parent. This diploid state is crucial for maintaining the species' chromosome number through generations.
2n
3n
Its Hexaploid
2n
23
Ploidy
The cells of the tetrad in a pollen plant are haploid, meaning they contain a single set of chromosomes. This haploid condition is important for sexual reproduction, as it ensures the resulting gametes have the correct number of chromosomes when they combine during fertilization.