Is My Understanding of Chromosome Numbers in Meiosis Accurate?

[omni]

In the picture you can see 2 table.
Table-1 is the original table that I got on my question,and table-2 is my answer.
I would like to know if I correct.



Thanks.

 

[Rear Naked]

After DNA multiplication in a fertilized cell, the DNA molecules and mass will double...so 2m and 92.

This is referring to S-phase replication, before mitosis.

There might be something tricky about the number of DNA molecules, but I think what I said is correct.

 

[omni]

yep i think you are correct.

thank you :)

 

[stef6987]

yes you are right, as already stated the DNA molecules will double as well as mass.

 

[DeeNos]

Meiosis is a type of cell division that results in the production of gametes, or reproductive cells. During meiosis, the number of chromosomes in a cell is reduced by half, resulting in the formation of haploid cells. This process is essential for sexual reproduction and ensures genetic diversity in offspring.

Table-1 shows the number of chromosomes present in each stage of meiosis in a diploid cell, which contains two sets of chromosomes. In prophase I, homologous chromosomes pair up and exchange genetic material through crossing over. This results in the formation of four chromatids, as shown in Table-1.

In metaphase I, the homologous chromosomes line up at the equator of the cell, and in anaphase I, they separate and move to opposite poles. This results in the formation of two haploid cells, each containing one set of chromosomes. The same process occurs in prophase II, metaphase II, and anaphase II, resulting in the formation of four haploid cells.

Table-2 shows the correct number of chromosomes in each stage of meiosis. Each haploid cell contains half the number of chromosomes as the original diploid cell. Therefore, in humans, where the diploid number is 46, the haploid number would be 23.

In conclusion, your answer in Table-2 is correct, showing the correct number of chromosomes in each stage of meiosis. It is important to understand the process of meiosis and the reduction of chromosomes to ensure the proper formation of gametes and genetic diversity in offspring.