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Microsporesgenesis in Maize
Question 1
The leptonoma, pachynema, the diplonema and the diakinesis occur in cells called the somatic cells.
Question 2
Difference between the leptonema and the pachynema
The first stage of the prophase is called the leptonema before the cell transforms to the zygonema stage (Rizzo, 16). The pachynema stage is the prophase stage whereby the chromosome shortens and coils.
The difference is accounted by the stage of the prophase and the condition of the chromosome.
Question 3
The chromomeres are not visible in the leptonema. This is because they are not yet fully developed.
Question 4
The stage in which the nucleolus is visible include the metaphase.
Question 5
The diplonema differs from the diakinesis by the structure of the organelles. The chromatids in the diplonema are well formed but no visible in the diakinesis.
Question 6
The chiasmata are visible in the diplonema and diakinesis since they are fully formed.
Two pairs of the chiasmata occur in the triad.
Question 7
The tetrads which can be counted in the diakinesis are four pairs.
The chromosomes present in the maize pollen grains are two pairs.
The pollen grains are haploid since they give gametophytic plants (Rizzo, 90).
Question 8
The metaphase of the mitotic division differs from the meiosis division by the nature of the homologous pair of the chromosomes. In the mitosis, they don’t occur while in the meiosis the chromosomes are well aligned.

Question 9
The ploidy formed in the telophase is diploid cells.
The chromosomes present in the telophase of the maize cell is two pairs since it is haploid cell.
At prophase two the number of the chromosomes is two.
Question 10
The prophase ii differs from telophase 1 by the chromatids and the nucleolus visibility. In the prophase ii they have disappeared but in the telophase 1 they become visible.
Question 11
The cells in the metaphase 1 have nuclear envelope broken while the spindle apparatus has formed. I prophase 1 there is genetic recombination due to the crossover of the chromosome pairs (Rizzo, 98).
The anaphase ii and anaphase 1: the chromosomes separate and move to the poles at the opposite of the cells. The sister chromatids remain attached. The anaphase 2 is characterized by the centromeres which are at the end of the poles while the chromatids move towards the opposite poles.
Question 12
The name given to the cells in the telophase 2 daughter haploid cells.
The changes in which the cells undergo: the chromosomes undergo de-condensation.
Question 13
Pollen mother cell is haploid cell and has two pairs of chromosomes.
Microspore is a haploid cell with two pairs of chromosomes.
The generative nucleus is a diploid cell with one pair of chromosome.
Tube nucleus is haploid with one pair of chromosome.
Sperm nucleus is a diploid cell with two one pair of chromosome.
Question 14
Part of the plant is the flower.
Question 15
In flowering plants such as the Zea mays, the meiosis does not directly to the gametes.
The statement is true because in the flowering plants the meiosis process forms the haploid spores.
Meiosis in Ascaris Oogenesis
Part A
Number 1: The name given to the cells: haploid cells
Number 2: the spermatozoa should have means of locomotion to swim through the vaginal fluid up to the fallopian tube for the fertilization.
Part C
The number of the chromosomes in the secondary oocyte?
The chromosomes are 4
The chromatids present in the chromosomes are 2
The cells are haploid
Part E
The chromosomes present are 4.The cells with the centrioles are in the anaphase stage of mitosis.
The Mitosis in the Longitudinal Section of the Onion Tips
1. The slide differs from the one prepared in terms of the size and the reagents used
2. Advantages of the slides
It is cheap
It is easy to prepare
The slide can be customized
3. Advantages of commercial slides
They are universal for the majority of specimen
They give accurate results
5. The spindle in the cells is visible
6. The cell plate is visible
Mitosis in Animal Cells
Yes they are observable
Yes the cytokinesis process is visible
Blastula is a mass of cells that is formed after the fertilization process.
Works Cited
Rizzo, Donald C. Fundamentals of anatomy and physiology. Cengage Learning, 2015.