An organism has 27 pairs of homologous chromosomes. In each daughter cell after completion of mitosis and in each gamete after completion of meiosis II, ______ and _______ chromosomes would be present respectively.

Options

A. 27 and 27
B. 54 and 27
C. 108 and 54
D. 54 and 108

Explanation

To solve the question, we need to determine the number of chromosomes present in daughter cells after mitosis and in gametes after meiosis II for an organism that has 27 pairs of homologous chromosomes.

### Step-by-Step Solution:

1. **Understanding the Total Number of Chromosomes**:
- The organism has 27 pairs of homologous chromosomes.
- Each pair consists of 2 chromosomes.
- Therefore, the total number of chromosomes is calculated as:
\[ \text{Total Chromosomes} = 27 \text{ pairs} \times 2 = 54 \text{ chromosomes} \]

2. **Chromosome Count After Mitosis**:
- Mitosis is an equational division, meaning the number of chromosomes remains the same in the daughter cells as in the parent cell.
- Since the parent cell has 54 chromosomes, after mitosis, each daughter cell will also have:
\[ \text{Chromosomes after Mitosis} = 54 \text{ chromosomes} \]

3. **Chromosome Count After Meiosis II**:
- Meiosis is a reductional division, meaning the number of chromosomes is halved in the gametes.
- After meiosis, each gamete will have half the number of chromosomes compared to the parent cell.
- Therefore, the number of chromosomes in each gamete after meiosis II will be:
\[ \text{Chromosomes after Meiosis II} = \frac{54 \text{ chromosomes}}{2} = 27 \text{ chromosomes} \]

4. **Final Answer**:
- In summary, after completion of mitosis, there will be **54 chromosomes** in each daughter cell, and after completion of meiosis II, there will be **27 chromosomes** in each gamete.

### Final Answer:
In each daughter cell after completion of mitosis and in each gamete after completion of meiosis II, **54** and **27** chromosomes would be present respectively.