What is the chromosome number of the megaspore mother cell?
Endosperm is 3x=12,x=4, MMC is 2x and therefore 2x=8.
|Question||Number of chromosomes is 12 in endosperm. What shall be the number in megaspore mother cell .|
|Type of Answer||Video, Text & Image|
Is a megaspore 1n or 2n?
The gametophytes (1n), microspores and megaspores, are reduced in size. This phase may take more than one year between pollination and fertilization while the pollen tube grows towards the megasporocyte (2n), which undergoes meiosis into megaspores. The megaspores will mature into eggs (1n).
Are megaspores 2n?
In diploid 2n plants female meiosis (megasporogenesis) in the Megaspore Mother Cell (MMC) gives rise to four haploid (n) megaspores, of which three degenerate (Fig. … The two polar nuclei of the central cell fuse, and form a 2n nucleus.
Is megaspore mother cell haploid or diploid?
A megaspore mother cell, or megasporocyte, is a diploid cell in plants in which meiosis will occur, resulting in the production of four haploid megaspores.
What is it called when you have 3 21 chromosomes?
A medical term for having an extra copy of a chromosome is ‘trisomy. ‘ Down syndrome is also referred to as Trisomy 21.
What is the number of chromosome in the endosperm?
The endosperm mother cell has two polar nuclei so it contains a total of 8 chromosomes.
Is a mega gametophyte haploid or diploid?
In terms of chromosomes, the gametophyte is haploid (has a single set of chromosomes), and the sporophyte is diploid (has a double set).
Is Synergid haploid or diploid?
Synergids are the two nuclei in the embryo sac of flowering plants that are closely associated with the oosphere or egg cells, to form the egg apparatus. They are haploid.
Is endosperm diploid or haploid?
The central cell of the female gametophyte in these taxa contains only one haploid nucleus; thus endosperm is diploid and has a ratio of one maternal to one paternal genome.
Is the seed coat haploid or diploid?
The embryo is diploid (2n), the endosperm (food reserve) is haploid (n), and the seed coat is diploid (2n).