So, the correct answer is ‘Meiosis II resembles mitosis when sister chromatids split’

Both produce two daughter cells from each parent cell. However, Meiosis I begins with one diploid parent cell and ends with two haploid daughter cells, halving the number of chromosomes in each cell….How is Meiosis I Different from Meiosis II?

In the cell cycle, the cell’s DNA is replicated in interphase, the phase that precedes mitosis. Mitosis alternates with interphase to make up the cell cycle in its entirety….Mitosis Versus Meiosis: The Similarities and Differences.

The Cell Cycle, Mitosis and Meiosis

• G1 phase. Metabolic changes prepare the cell for division.
• S phase. DNA synthesis replicates the genetic material.
• G2 phase. Metabolic changes assemble the cytoplasmic materials necessary for mitosis and cytokinesis.
• M phase. A nuclear division (mitosis) followed by a cell division (cytokinesis).

Mitosis produces two cells from one parent using one division event. But meiosis produces four new child cells with two divisions, each of which has half the genetic material of its parent. Mitosis takes place all over the body, while meiosis only takes place in the sex organs and produces sex cells.

Stages of mitosis: prophase, metaphase, anaphase, telophase. Cytokinesis typically overlaps with anaphase and/or telophase. You can remember the order of the phases with the famous mnemonic: [Please] Pee on the MAT.

The process results in four daughter cells that are haploid, which means they contain half the number of chromosomes of the diploid parent cell. Meiosis has both similarities to and differences from mitosis, which is a cell division process in which a parent cell produces two identical daughter cells.

These phases are prophase, prometaphase, metaphase, anaphase, and telophase. Cytokinesis is the final physical cell division that follows telophase, and is therefore sometimes considered a sixth phase of mitosis.

46 chromosomes

Prophase

During interphase, the cell grows and makes a copy of its DNA. During the mitotic (M) phase, the cell separates its DNA into two sets and divides its cytoplasm, forming two new cells.

The cell cycle has two major phases: interphase and the mitotic phase (Figure 1). During interphase, the cell grows and DNA is replicated. During the mitotic phase, the replicated DNA and cytoplasmic contents are separated, and the cell divides.

The G1 stage stands for “GAP 1”. The S stage stands for “Synthesis”. This is the stage when DNA replication occurs. The G2 stage stands for “GAP 2”.

The main events of prophase are: the condensation of chromosomes, the movement of the centrosomes, the formation of the mitotic spindle, and the beginning of nucleoli break down.

During prophase, chromatin condenses into chromosomes, and the nuclear envelope, or membrane, breaks down. In animal cells, the centrioles near the nucleus begin to separate and move to opposite poles (sides) of the cell.

(MITOSIS PROMOTING FACTOR) MPF is a cyclin-CDK complex which acts at the G2 checkpoint which triggers the cells undergo mitosis. (MPF activity corresponds to high levels of cyclin it is active when cyclin concentration is high. which ensures that daughter cells do not end up with missing or extra chromosomes.

Crossing over is essential for the normal segregation of chromosomes during meiosis. Crossing over also accounts for genetic variation, because due to the swapping of genetic material during crossing over, the chromatids held together by the centromere are no longer identical.

Crossing over is a process that happens between homologous chromosomes in order to increase genetic diversity. During crossing over, part of one chromosome is exchanged with another. The result is a hybrid chromosome with a unique pattern of genetic material.

Crossing over is the swapping of genetic material that occurs in the germ line. During the formation of egg and sperm cells, also known as meiosis, paired chromosomes from each parent align so that similar DNA sequences from the paired chromosomes cross over one another.

Without crossing over, each chromosome would be either maternal or paternal, greatly reducing the number of possible genetic combinations, which would greatly reduce the amount of genetic variation between related individuals and within a species.

D)New combinations of alleles arise from the random events of crossing over, independent assortment, and mutation.