In a human cell at the end of prophase I, how many chromatids, centromeres, and bivalents are present?

Q: Name the phases of the cell cycle.  b) During which phases are the chromosomes and then the…

A: Cell cycle  Cell cycle is a division of cell takes place in various steps and divide one cell into…

Q: What are the events that mark the beginning and the end of the third interphase period? What happens…

A: Interphase can be defined as the interval between progressive cell divisions. Protein synthesis, DNA…

Q: Draw a diagram of the cell cycle and label the phases. On your diagram: a) For each phase, indicate…

A: Actively dividing eukaryote cells go through the cell cycle, which includes two gap phases (G1 and…

Q: Kinetochores control the transition from metaphase to anaphase. Why is this statement true?…

A: Kinetochores are protein complexes that assemble on the centromere of each chromosome. They are…

Q: Explain why we can say that M-phase of the cell-cycle is triggered by a positive feedback loop.…

A: Feedback loops work to regulate the sequence of events by giving feedbacks. That is in case some…

Q: The interphase is the part of the eukaryotic cell cycle that is most transcriptionally active. Gene…

A: DNA is the genetic material that transfers the information from one generation to the other. It is…

Q: Are replicated chromosomes are positioned on the cell’s equator anaphase, metaphase, or telophase?…

A: Introduction: Mitosis is that step in the cell cycle where the newly formed DNA is separated and two…

Q: What is the function of a centromere? At what stage of the cellcycle would you expect the centromere…

A: Chromosomes are long thread-like structures that carry coded genetic information in the form of DNA.…

Q: What are the events that mark the beginning and the end of the second interphase period? What…

A: Interphase is the resting phase of cell. During this phase, the cell will copy its DNA in…

Q: If a typical somatic cell has 12 chromosomes, how many chromatids and DNA molecules are expected in…

A: Somatic cell is the normal cell which contains a diploid number of chromosomes.  All the body cells…

Q: What is the function of mitotic spindle?

A: Cell division is a process in which a cell splits into daughter cells. In the process of cell…

Q: In mitosis, what chromatid combination(s) will be present during metaphase? What combination(s) will…

A: Cell division in somatic cells;Mitosis happens in bodily cells. cell division happens in four…

Q: During which phase does cytokinesis begin? What cell parts migrate to the poles during prophase?…

A: Cell division in eukaryotes can be either mitosis or meiosis. Mitosis is an equational division in…

Q: What are the two broadest divisions of the cell cycle? What two processes are involved in the actual…

A: The cell cycle may be a four-stage process within which the cell will increase in size (gap one, or…

Q: why During Mitosis, Sister ChromatidsSeparate and Two Daughter Nuclei Form?

A: Mitosis is a process in which a eukaryotic cell undergoes division to two daughter cells. The first…

Q: What is prochromosome?

A: Genetics is the branch of biology which deals with genes, heredity, and genome in the organism.…

Q: Which phase of the cell cycle is depicted in this diagram? a)  S phase b)  early prophase c)…

A: The cell cycle, also referred to as the cell division cycle, is a series of events that cause a cell…

Q: Name the indicated regions of the meristem diagramed below.

A: In the meristematic zone, named after the apical meristem, the plant cells undergo rapid mitotic…

Q: In the cell shown by the red arrow (the bottom arrow), which step of mitosis is occurring?

A: Mitosis  It is the process by which cell divides into two identical daughter cells. This helps in…

Q: In meiosis, each centromere has a spindle fiber attached only to one side. In mitosis, each…

A: Meiosis: Reductional division  2n (diploid) => meiosis => n (haploid) Mitosis: Equational…

Q: Which of the following events happen during interphase? CHOOSE ALL THAT ARE CORRECT. A) DNA…

A:

Q: A cell in G1 of interphase has 8 chromatins. How many chromosomes and how many DNA molecules will be…

A: Cell cycle: - It is a regulated process. - Sequential process. - Irreversible - Dependent phase of…

Q: Under normal conditions, what happens to the cell cycle if the chromosomes fail to separate properly…

A: During anaphase, sister chromatids (or homologous chromosomes), separates and move to opposite poles…

Q: At the end of which phase(s) of the mitotic cell cycle does each chromosome consist of two sister…

A: Chromosomes are long, thread-like structures that contain tightly packed DNA within the nucleus. The…

Q: When chromatids are separated during anaphase, how do we know that the microtubules that they are…

A: Chromatids are the thread like structures attached to the kinetochores of a chromosome. Both the…

Q: A somatic cell has 46 chromosomes aligned at metaphase. How many chromosomes are present at…

A: The DNA (deoxyribonucleic acid) remains wound up around the histone proteins to form the structure…

Q: What structure is formed by when  two sister chromatids areheld together by a centromere?

A: In the process of cell division, the chromatin present in the nucleus shrinks and form a thread-like…

Q: In the cell shown by the green arrow (the top arrow), which step of mitosis is occurring?

A: Mitosis is the process of cell division and it constitutes a very small portion of the entire cell…

Q: If the most basic function of the cell cycle is to accurately duplicate the DNA in the chromosomes…

A: The "cell cycle" consists of the replication and reproduction of cells in eukaryotes or prokaryotes.…

Q: The same chromosome can look very different depending on when in meiosis it is observed.  Explain…

A: Chromosomes appear very differently depending on where they are observed in the cell cycle.

Q: What are the functionalroles of the mitotic spindle in an animal cell? Explain how thesefunctions…

A: The isolation of the repeated chromosomes is achieved by a complex cytoskeletal structure with many…

Oogenesis

The formation of the ovum (mature female gamete) from undifferentiated germ cells is called oogenesis. This process takes place in the ovaries (female gonads). Oogenesis consists of three stages known as the multiplication phase, growth phase, and maturation phase. 

Cell Division

Cell division involves the formation of new daughter cells from the parent cells. It is a part of the cell cycle that takes place in both prokaryotic and eukaryotic organisms. Cell division is required for three main reasons: