halploid
Haploid
meiosis
Four megaspores are formed from meiotic division of megapore mother cell which is diploid. We know that diploid cells undergo meiosis to give haploid cells. So, it seems to me that megaspores are haploid.
The diploid number is "2n" and the haploid number is "n". Humans have 46 chromosomes, which are equal to the diploid number. half of these chromosomes are the haploid number, which is = 23.
A newly formed zygote forms immediately begins the process of cell division and differentiation which lead to the formation of an embryo.
meiosis
Haploid
meiosis
Haploid cells formed by meiosis combine to produce a diploid cell.
They are haploid. As meosis produces sex cells (sperm and eggs) they must have half the genetic material, so when fertilisation occurs the gamete formed has one full set of chromosomes, it is diploid.
In meiosis diploid cells divide to produce four daughter cells each of which is haploid. It is the type of cell division required to produce gametes.
A zygote is the first diploid cell that is formed by the fusion of male and female gametes resulting in the formation of an embryo. The zygote stage development occurs in the first week of fertilization
Four megaspores are formed from meiotic division of megapore mother cell which is diploid. We know that diploid cells undergo meiosis to give haploid cells. So, it seems to me that megaspores are haploid.
The diploid number is "2n" and the haploid number is "n". Humans have 46 chromosomes, which are equal to the diploid number. half of these chromosomes are the haploid number, which is = 23.
A newly formed zygote forms immediately begins the process of cell division and differentiation which lead to the formation of an embryo.
Embryo is formed in germinal spot of yolk .
A haploid cell only contains 23 chromosomes, whilst a diploid cell contains 23 x 2 chromosomes. When an egg cell (haploid) and a sperm cell (haploid) merge, a diploid cell is formed. Added: Called a zygote.