What would happen if DNA replication occur again before meiosis II?

If DNA replication occurred again before meiosis II, the sister chromatids would be replicated and the cells would have four copies of 23 individual chromosomes. At the end of meiosis II, the resulting haploid cell would have two copies of 23 individual chromosomes, a condition that is incompatible with life.

What happens if DNA is replicated twice?

If a cell enters mitosis with partly replicated chromosomes, or if a cell over-replicates its chromosomal DNA, genetic alterations could ensue, possibly leading to cell death or malignant cell growth.

Is DNA replicated again before meiosis 2 quizlet?

The daughter cells each have a random assortment of chromosomes, with one from each homologous pair. They go on to meiosis 2. … No, because DNA is replicated in Interphase first and no interphase stage exists after after Meiosis 1.

Why is it important that DNA replication occurs before meiosis I but not before meiosis II?

Why is that important? 0.It results in uneven division of the cytoplasm. 1.It results in uneven division of the cytoplasm.

Does DNA replicate once in meiosis?

Note: The DNA replication occurs only once in both meiosis and mitosis although the number of cell divisions is two in meiosis and one in mitosis which results in the production of different numbers of haploid cells in both the process.

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How many times does DNA replication occur in meiosis?

The initiation of meiosis requires both intrinsic and extrinsic signals. Meiosis is characterized by one round of DNA replication followed by two rounds of cell division, resulting in haploid germ cells.

Which is the result of meiosis 2?

The result of meiosis II is the formation of four unique cells, each carrying a new assortment of genes and chromosomes, and each with half the number of original chromosomes.

What would happen if DNA replication occurred again before meiosis 2 quizlet?

If DNA replication occurred again before meiosis II, the sister chromatids would be replicated and the cells would have four copies of 23 individual chromosomes. At the end of meiosis II, the resulting haploid cell would have two copies of 23 individual chromosomes, a condition that is incompatible with life.

Is the DNA replicated after meiosis I Why?

Note that meiosis II immediately follows meiosis I; DNA replication does not occur after meiosis I. Notice how the chromosomes align in prophase I. The alignment of homologous chromosomes allows for crossing-over, a process that increases genetic variability, which will be discussed in more detail in another concept.

Why there is no DNA replication in meiosis 2?

Once meiosis starts, the purpose is to produce a haploid gamete. So there is no further need of replication or growth. Hence between meiosis I and meiosis II , there is no interphase.

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