GROW and multiply to form a diversity of life forms, this process of GROWTH and multiplication of cells is called Cell Division.Cell division is of three types:Mitosis - Equational division, occurs in SOMATIC (non-sex) cellsMeiosis - Reducttional division, occurs in sex cellsAmitosis - Direct type of division, occurs in prokaryotesMeiosis can be further divided into two stages - MEIOSIS I and Meiosis IIExplanation:Prophase I of Meiosis I has 5 sub-stagesLeptotene, Zygotene, Pachytene, Diplotene, Diakinesis.The Zygotene stage is characterized by the pairing of homologous chromosomes called the ''Synapsis''The pairs of homologous chromosomes are called Bivalents.There develops a structure between the homologous chromosomes called the synaptonemal complex. It is a tripartite structure i.e. it is made up of 3 thick lines of DNA and protein. Leptotene: During leptotene, the chromatin condenses to form the chromosomes. Chromosomes are the longest and thinnest in this stage.Pachytene: This stage is characterized by the occurrence of crossing over. Non-sister chromatids of the homologous chromosomes exchange their genetic parts. Metaphase I: The first metaphase of meiosis characterized by the alignment of paired chromosomes along the center (metaphase plate) of a cell, which ensures that two complete copies of chromosomes are present in the RESULTING two daughter cells of meiosis I.

"> GROW and multiply to form a diversity of life forms, this process of GROWTH and multiplication of cells is called Cell Division.Cell division is of three types:Mitosis - Equational division, occurs in SOMATIC (non-sex) cellsMeiosis - Reducttional division, occurs in sex cellsAmitosis - Direct type of division, occurs in prokaryotesMeiosis can be further divided into two stages - MEIOSIS I and Meiosis IIExplanation:Prophase I of Meiosis I has 5 sub-stagesLeptotene, Zygotene, Pachytene, Diplotene, Diakinesis.The Zygotene stage is characterized by the pairing of homologous chromosomes called the ''Synapsis''The pairs of homologous chromosomes are called Bivalents.There develops a structure between the homologous chromosomes called the synaptonemal complex. It is a tripartite structure i.e. it is made up of 3 thick lines of DNA and protein. Leptotene: During leptotene, the chromatin condenses to form the chromosomes. Chromosomes are the longest and thinnest in this stage.Pachytene: This stage is characterized by the occurrence of crossing over. Non-sister chromatids of the homologous chromosomes exchange their genetic parts. Metaphase I: The first metaphase of meiosis characterized by the alignment of paired chromosomes along the center (metaphase plate) of a cell, which ensures that two complete copies of chromosomes are present in the RESULTING two daughter cells of meiosis I.

">

In which stage of meiosis does synapsis take place?

Current Affairs Biology in Current Affairs 8 months ago

  2   0   0   0   0 tuteeHUB earn credit +10 pts

5 Star Rating 1 Rating

Concept:The cell is the basic unit of life. Life arises from pre-existing cells. Cells GROW and multiply to form a diversity of life forms, this process of GROWTH and multiplication of cells is called Cell Division.Cell division is of three types:Mitosis - Equational division, occurs in SOMATIC (non-sex) cellsMeiosis - Reducttional division, occurs in sex cellsAmitosis - Direct type of division, occurs in prokaryotesMeiosis can be further divided into two stages - MEIOSIS I and Meiosis IIExplanation:Prophase I of Meiosis I has 5 sub-stagesLeptotene, Zygotene, Pachytene, Diplotene, Diakinesis.The Zygotene stage is characterized by the pairing of homologous chromosomes called the ''Synapsis''The pairs of homologous chromosomes are called Bivalents.There develops a structure between the homologous chromosomes called the synaptonemal complex. It is a tripartite structure i.e. it is made up of 3 thick lines of DNA and protein. Leptotene: During leptotene, the chromatin condenses to form the chromosomes. Chromosomes are the longest and thinnest in this stage.Pachytene: This stage is characterized by the occurrence of crossing over. Non-sister chromatids of the homologous chromosomes exchange their genetic parts. Metaphase I: The first metaphase of meiosis characterized by the alignment of paired chromosomes along the center (metaphase plate) of a cell, which ensures that two complete copies of chromosomes are present in the RESULTING two daughter cells of meiosis I.

Posted on 04 Nov 2024, this text provides information on Current Affairs related to Biology in Current Affairs. Please note that while accuracy is prioritized, the data presented might not be entirely correct or up-to-date. This information is offered for general knowledge and informational purposes only, and should not be considered as a substitute for professional advice.

Take Quiz To Earn Credits!

Turn Your Knowledge into Earnings.

tuteehub_quiz

Tuteehub forum answer Answers

Post Answer

No matter what stage you're at in your education or career, TuteeHub will help you reach the next level that you're aiming for. Simply,Choose a subject/topic and get started in self-paced practice sessions to improve your knowledge and scores.