After meiosis I, the resultant daughter cells have -

Options

A. Same amount of DNA as in the parent cell in S - phase
B. Twice the amount of DNA in comparison to haploid gamete
C. Same amount of DNA in comparison to haploid gamete
D. Four times the amount of DNA in comparison to haploid gamete

Answer

To answer the question "After meiosis I, the resultant daughter cells have -", we need to analyze the process of meiosis and the amount of DNA present in the daughter cells after the first meiotic division.

### Step-by-Step Solution:

1. **Understanding Meiosis**: Meiosis is a type of cell division that reduces the chromosome number by half. It consists of two sequential divisions: meiosis I and meiosis II.

2. **Meiosis I Overview**: In meiosis I, a diploid parent cell (2n) undergoes division to produce two haploid daughter cells (n). However, before meiosis I begins, the DNA in the parent cell is replicated during the S phase of the cell cycle, resulting in chromosomes that consist of two sister chromatids.

3. **DNA Content in Parent Cell**: The parent cell has a diploid amount of DNA, which we can denote as 2C (where C represents the amount of DNA in a haploid cell).

4. **DNA Content After Meiosis I**: After meiosis I, the two daughter cells produced are haploid (n), but each daughter cell still contains the replicated chromosomes. Thus, each daughter cell has the same amount of DNA as the parent cell at the end of the S phase, which is still 2C.

5. **Analyzing the Options**:
- **Option A**: Same amount of DNA as in the parent cell in S phase - This is correct because the daughter cells have 2C DNA.
- **Option B**: Twice the amount of DNA in comparison to haploid gamete - This is incorrect because haploid gametes have C DNA, and the daughter cells have 2C.
- **Option C**: Same amount of DNA in comparison to haploid gamete - This is incorrect; the daughter cells have 2C, not C.
- **Option D**: Four times the amount of DNA in comparison to the haploid gamete - This is incorrect; again, the daughter cells have 2C, not 4C.

6. **Conclusion**: The correct answer is **Option A** - the resultant daughter cells after meiosis I have the same amount of DNA as in the parent cell during the S phase.