Duqring meiosis cell devision one deploid cell produce four haploid cell.
if one deploid cell contain 26bivalent then each haploid cell contain 26chromosome.
During meiosis 1st ,during anafase 1st chromosome devide in two parts but centromere doesn't devide.DNA replication dosen't ocurrs during meosis 1st.so no chromosome remains half as 26chromosome.
But during meiosis 2nd DNA replication takes part and centromere devide during anafase 2nd so no.of chromosome remain same as 26chromosome.,

Explanation:

To understand the number of chromosomes in the meiosis-I and meiosis-II cell products, let's first define some key terms:

- Bivalent: A bivalent refers to a pair of homologous chromosomes that come together during meiosis. In humans, there are 23 pairs of bivalents, making a total of 46 bivalents.
- Meiosis-I: The first stage of meiosis where homologous chromosomes separate, resulting in two daughter cells.
- Meiosis-II: The second stage of meiosis where sister chromatids separate, resulting in four haploid daughter cells.

Given that there are 26 bivalents in the cell, we can determine the number of chromosomes in the meiosis-I and meiosis-II cell products.

Meiosis-I:
During meiosis-I, the homologous chromosomes separate, resulting in two daughter cells. Each daughter cell will receive half of the bivalents.

Therefore, the number of chromosomes in the meiosis-I cell products will be half of the bivalents, which is 26/2 = 13 chromosomes.

Meiosis-II:
During meiosis-II, the sister chromatids separate, resulting in four haploid daughter cells. Each daughter cell will inherit half of the chromosomes from the meiosis-I cell products.

Since there are 13 chromosomes in each meiosis-I cell product, each meiosis-II daughter cell will receive 13/2 = 6.5 chromosomes. However, chromosomes cannot be divided into half, so we can consider it as 6 chromosomes.

Therefore, the number of chromosomes in the meiosis-II cell products will be 6 chromosomes.

Conclusion:
- Meiosis-I cell products: 13 chromosomes
- Meiosis-II cell products: 6 chromosomes

Hence, the correct answer is option (c) 26, 26.