Suppose you isolated a mutant strain of yeast that replicates its DNA more than once per cell cycle. In other words, each gene in the genome was replicated several times between successive cell divisions. How might you explain such a phenomenon?

Q: Consider you are growing HEK293 cells in the lab. After you subculture the cells several times, you…

A: The HEK293 cells represents the immortalized ccell line of embryonic kidney, epithelial morphology…

Q: Why would the failure of the p53 tumor supressor gene be more likely to cause cancer in a seventy…

A: p53 is a tumor suppressor gene which regulates cell cycle.

Q: Sometimes a cells "deal with" damaged DNA by just killing off the cell. This special cellular…

A: The process of apoptosis is important for the normal functioning of the immune system of the body.…

Q: One way that researchers create a cell line that is "immortal" (divides forever in culture) is by…

A: Telomeres are repetitive sequences of DNA that are present at the ends of the chromosomes and help…

Q: I have a pet amoeba. It's name is Stretch. I look at stretch every day with my microscope, feed it,…

A: In discussing the fascinating scenario of Stretch the pet amoeba reproducing through mitosis and…

Q: Interphase: chromosomes are unpaired Prophase: chromosomes and centromeres have replicated, but…

A: Based on the image below, briefly write two (2) conclusions from this process.

Q: The separation of the parent cell into two daughter cells fails to occur during the process of…

A: Introduction :- Binary fission is an asexual reproduction method in which a parent cell divides into…

Q: As a certain cell went through S phase, many mistakes were made during DNA replication that could…

A: DNA is the nucleic acids present in the organisms. DNA is the deoxy ribose nucleic acid in which…

Q: Cyclin dependent kinases would exist in similar amounts in the cells at the different stages…

A: Let us analyze each statement individually:- CDK are present in different proportions  in different…

Q: If  I extract a cell culture with 100 cells that just entered g1.  I needs to extract the MOST…

A: Introduction: Cell cycle is the process by which a cell replicates i.e. makes copies of itself or…

Q: Put a checkmark next to any of the following scenarios that would make it MORE likely that a cell…

A: Need to find all the options that produce uncontrollable cell division  and to increase chance of…

Q: What difference exists between the compaction of chromosomes during metaphase versus interphase?…

A: Chromosomal condensation: In the case of a eukaryotic chromosome, there are 3 levels of chromatin…

Q: What accounts for the different morphological and functional differences between cells that contain…

A: Deoxyribonucleic acid (DNA) is the genetic material responsible for the transfer of genetic…

Q: Chromosomes attach to the spindle during

A: Phases of cell division include :  Prophase  Metaphase  Anaphase  Telophase  Option a ( anaphase )…

Q: For S phase to be completed in a timely manner, DNA replication must be initiated from multiple…

A: The cell cycle is the sequence of phases that takes place in the process of cell division. To…

Q: Most forms of cancer are caused by environmental agents that produce mutations in somatic cells. Is…

A: Environmental factors have been known to trigger a lot of the mutations which develop into cancerous…

Q: Most cells are unable to copy the ends of chromosomes, and therefore chromosomes shorten with each…

A: Telomerase is an enzyme that is essential for the replication of chromosomal ends. It is a…

Q: If DnaA was not regulated in Escherichia coli and multiplerounds of replication were completed…

A: The replication process initiates at the origin of replication in the genome. This sequence…

Q: chromosome replication occurs during

A: Cell division is a prominent process that takes place in our body. During cell division in…

Q: The figure shown describes the technique of FISH. Why is it necessaryto fix the cells (and the…

A: Fluorescence in situ hybridization (FISH) is one of the defined cytogenic technique that aims to…

Q: Is there any technique can quickly expand one set of cell chromosome?

A: The genetic material of an organism that it inherits from the parents is known as deoxyribonucleic…

Q: How do we know that DNA replication occurs during inter-phase, not early in mitosis?

A: BASIC INFORMATION CELL DIVISION  It is necessary for all the cells In this the parent cell divides…

Q: Why does nucleation rate cause the number of microtubules to be proportional to nucleation rate but…

A: Microtubules are key elements in maintaining structural integrity, cell signalling, transport and…

Q: Despite being asexual, bacteria can develop genetic variability during the process of conjugation.…

A: Conjugation is a process involving the exchange of genetic material between bacteria via direct…

Q: All cells must replicate their DNA before each cell division. Why is it that DNA has to be…

A: Th deoxiribonucleic acid or the DNA is the genetic material in most of the organism

Q: Consider the figure beow, which depicts chromatin within the neucleus of a eukaryotic cell. nucleus…

A: Topologically associating domain (TAD) also called chromosomal interacting domains in bacteria. They…

Q: GENETICS Recombination between linked genes via crossing over occurs a) at the 2 strand stage,…

A: Answer is e.) during mitosis.

Q: 30. Mitotic chromosomes are A) 103 B) 104 105 D) 108 times more compact than a DNA molecule in its…

A: Mitotic chromosomes -  The chromosomes into which genome is packaged to ensure its accurate…

Q: Consider Figure 7, which illustrates a point in DNA synthesis for one end of a chromosome, after the…

A: DNA synthesis or DNA replication is a process where parental DNA makes two identical copies of…

Q: Draw the structure of taenia and fasciola?

A: The Platyhelminthes are acoelomate flatworms. They have no specialized circulatory or respiratory…

Q: In the experiment of cell fusion, when tumor cells were fused with normal cells, the initially…

A: Cell fusion is an important cellular process in which two or more uninucleate cells merge to form a…

Q: Cell A is actively engaging in growth and division. The cell encounters a damage in its DNA at a…

A: Introduction: The restriction point or R-point denotes the start of a cell cycle (G1/S phase).…

Q: Hello, I did a Natural Transformation lab and have these questions to answer but don't really…

A: Natural transformation is a process by which some bacterial cells can take up and incorporate…

Q: I am trying to  understand DNA/chromosome structure and replication. I have a culture dish of human…

A: DNA is the genetic material present in the nucleus of the cells of an organism. It directs the…

Q: During which part of the cell cycle does DNA replication occur and why is it important? Select one:…

A: A cell cycle consists of a series of events which is required for growth and division of cells. A…

Q: You are studying a new fungus, G. lucasus, and are interested the molecules that control the cell…

A: The method known as flow cytometry allows for the quick analysis of individual cells or particles as…

Q: What result demonstrated that the spindles shorten at the chromosome end during anaphase? Group of…

A: At metaphase, chromosomes align at the metaphase equator plate and during anaphase, sister…

Q: When the homologous chromosomes line up along a central axis a) prophase b) metaphase c) anaphase d)…

A: Cell division generally takes place by two mechanisms, namely mitosis and meiosis. In cell division,…

Q: Why does nucleation sites cause the number of microtubules to rise but the length to grow unstable?

A: Microtubules are the structural part of the eukaryotic cells that are formed by the tubulin…

Q: In 1997, Dolly the sheep was cloned by a technique called somatic-cell nuclear transfer (or…

A: Somatic-cell nuclear transfer- It is an experiment of genetic and developmental biology for…

Q: Why is it important for a chromosome to be copied before mitosis?

A: Mitosis is a process of cell division in somatic cells. In this cell division, cells divide into two…

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: