Which of the following processes take place during prophase?
During prophase, the nuclear envelope dissolves and chromosomes condense. The chromosomes migrate to the center of the cell and align during metaphase. The mitotic spindle fibers attach during metaphase and retract during anaphase, pulling sister chromatids from each chromosome to separate poles of the cell.
Which of the following happens in prophase I?
Leptonema – The first prophase event occurs: chromatin condenses to form visible chromosomes. Condensation and coiling of chromosomes occur. Zygonema – Chromosomes line up to form homologous pairs, in a process known as the homology search. These pairs are also known as bivalents.
Which of the following takes place during prophase of mitosis?
What Happens during Prophase? Prophase is the first stage in mitosis, occurring after the conclusion of the G2 portion of interphase. During prophase, the parent cell chromosomes — which were duplicated during S phase — condense and become thousands of times more compact than they were during interphase.
Which process only takes place during prophase II?
Prophase II prepares the cell for secondary meiotic division where two haploid cells eventually form four haploid cells, each containing half of the genetic information previously contained in the original, replicated diploid cell.
What happens during prophase?
During prophase, the complex of DNA and proteins contained in the nucleus, known as chromatin, condenses. The chromatin coils and becomes increasingly compact, resulting in the formation of visible chromosomes. … The sister chromatids are pairs of identical copies of DNA joined at a point called the centromere.
What happens during prophase quizlet?
What happens during prophase? A cells genetic DNA condenses, spindle fibers begin to form and the nuclear envelope dissolves. … The duplicated chromosomes line up and spindle fibers connect to the centromeres. You just studied 9 terms!
What process occurs during prophase one of meiosis?
During prophase I, the complex of DNA and protein known as chromatin condenses to form chromosomes. The pairs of replicated chromosomes are known as sister chromatids, and they remain joined at a central point called the centromere.
What happens during prophase I of meiosis quizlet?
What happens during prophase I of meiosis? Homologous chromosomes form and crossing over occurs between them. … -Meiosis produces four genetically different haploid cells. -Genetic material is exchanged between homologous chromosomes in meiosis during crossing over.
What are the two most important processes that happen in prophase I of meiosis that do not happen in mitosis?
The events that occur in meiosis but not mitosis include homologous chromosomes pairing up, crossing over, and lining up along the metaphase plate in tetrads.
Which of the following occur during prophase prometaphase of mitosis in animal cells?
The correct answer is d.)
The replication of chromosomes occurs in interphase of mitotic division. The 2N chromosomes change into 4N chromosomes to indicate that the cell is ready for division. Prometaphase is the late stage of prophase and early stage of interphase. All other options are applicable to prometaphase.
Which of the following events occurs during telophase?
During telophase, chromosomes arrive at opposite poles and unwind into thin strands of DNA, the spindle fibers disappear, and the nuclear membrane reappears. Cytokinesis is the actual splitting of the cell membrane; animal cells pinch apart, while plant cells form a cell plate that becomes the new cell wall.
Which processes has steps called prophase metaphase anaphase and telophase?
Mitosis consists of five morphologically distinct phases: prophase, prometaphase, metaphase, anaphase, and telophase. Each phase involves characteristic steps in the process of chromosome alignment and separation.