What is the correct meiosis cell cycle sequence?
It still needs to separate sister chromatids (the two halves of a duplicated chromosome), as in mitosis. But it must also separate homologous chromosomes, the similar but nonidentical chromosome pairs an organism receives from its two parents. These goals are accomplished in meiosis using a two-step division process.
What is meiosis in the cell cycle?
Meiosis is a type of cell division that reduces the number of chromosomes in the parent cell by half and produces four gamete cells. This process is required to produce egg and sperm cells for sexual reproduction. … Meiosis begins following one round of DNA replication in cells in the male or female sex organs.
Which statement about meiosis is correct?
Meiosis is the process that creates gametes (eggs and sperm). The cell divides twice, creating 4 unique daughter cells that contain half (haploid) of the genetic information of the parent cell. Somatic cells are body cells and they are produced via mitosis.
Where is meiosis in the cell cycle?
In meiosis, the chromosome or chromosomes duplicate (during interphase) and homologous chromosomes exchange genetic information (chromosomal crossover) during the first division, called meiosis I. The daughter cells divide again in meiosis II, splitting up sister chromatids to form haploid gametes.
Which is the correct sequence of mitosis?
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.
Which of the following is the correct sequence of events in mitosis?
The correct order of mitotic phases is (C): Prophase – metaphase – anaphase – telophase. Prophase is the phase when the nuclear envelope dissolves,…
What type of cell is meiosis?
4. Anaphase I: The pair of chromosomes are then pulled apart by the meiotic spindle, which pulls one chromosome to one pole of the cell and the other chromosome to the opposite pole. In meiosis I the sister chromatids stay together.
What are the 4 stages of the cell cycle?
In eukaryotes, the cell cycle consists of four discrete phases: G1, S, G2, and M. The S or synthesis phase is when DNA replication occurs, and the M or mitosis phase is when the cell actually divides. The other two phases — G1 and G2, the so-called gap phases — are less dramatic but equally important.
Is meiosis a part of the cell cycle?
Cell division occurs as a part of the “cell cycle”. … The cell cycle is generally described as consisting of four main phases: G1, S phase, G2 and mitosis (or meiosis).
Are the following events of meiosis in the correct sequence?
The correct sequence of events of meiosis are synapsis (in zygotene) →crossing over (in pachytene)→terminalisation of chiasmata (in diplotene)→disappearance of nucleolus (in diakinesis).
Which of the following is an accurate description of meiosis?
Which of the following is a correct description of meiosis? – Meiosis is one round of DNA replication followed by one round of cell division. – Meiosis is two rounds of DNA replication followed by two rounds of cell division. … Meiosis is one round of DNA replication followed by two rounds of cell division.
Which of the following statement is correct about G1 phase?
G1 belongs to interphase of cell cycle which is metabolically active stage. During G1, synthesis of ATP, nucleotides, amino acids, RNAs and protein synthesis occur and growth of nucleus is observed.
What is meiosis Class 9?
Meiosis is the process in which a single cell divides twice to form four haploid daughter cells. These cells are the gametes – sperms in males and egg in females.
Is mitosis a cycle?
The mitotic cycle consists of a series of steps during which the chromosomes and other cell material double to make two copies. The cell then divides into two daughter cells, each receiving one copy of the doubled material. The mitotic cycle is complete when each daughter cell is surrounded by its own outer membrane.
Is meiosis haploid or diploid?
Meiosis involves the division of a diploid (2n) parent cell. The chromosomes are duplicated, but carry out two consecutive divisions. The result is four haploid (n) cells, each with half the number of chromosomes as the parent cell due to the separation of homologous pairs in meiosis I.