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: You examine a population of dividing cells with an electron microscope, and you see a large, floppy,…

A: A prokaryote undergoing binary fission.

Q: Which of the following favors the alignment of chromosomes along the equatorial plate? a.)Centromere…

A: A cell can divide either by mitosis or meiosis. Mitotic cell division refers to the process by which…

Q: why does s phase has least cell population？Isn‘t it true that s phase is for DNA replication？why not…

A: A cell is a basic unit of life. All the metabolic pathways responsible for proper function of the…

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: Which of the following solves the problem of shortening of chromosomes in each cell cycle?a) DNA…

A: The DNA replication mechanism is a semiconservative replication in which the parent DNA acts as the…

Q: Why is it important for chromosomes to be copied before cell divisions

A: Chromosomes are long thread-like structures that are located in the nucleus and carry coded genetic…

Q: Suppose you provide an actively dividing culture of E. coli with radioactive thymine. 111 would you…

A: DNA is the information hub of the cell that contains instruction for the synthesis of proteins. The…

Q: How many copies of each gene are found in a cell during prophase II?  A. one copy of each gene B.…

A: Meiosis or meiotic division is one of the two types of cell division found in living organisms. This…

Q: Why is DNA copying is the essential part of the process of reproduction?

A: Cell division is a vital life process, which is essential for an organism to grow, and develop.…

Q: 1.2 A colony of bacterial cells is exposed to UV-light. 1.2.1 What mutation will probably result…

A: MUTATION FROM UV LIGHT EXPOSURE Ultraviolet light induces specific mutations in the cellular and…

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: 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: In yeast, you have sequenced a piece of wild-type DNA and it clearly contains a gene, but you do not…

A: To find the mutated genes one must code all the amino acid of the genetic modified yeast and normal…

Q: Do a few cells created by therapeutic cloning of your own somatic cells constitute life? If these…

A: Somatic cells are those cell which forms the whole body of an organisms, also known as the vegetal…

Q: During which subphase does DNA replicate?     G1     G2     G0     S

A: A parent cell divides into two or more daughter cells in the course of cell division. Normally, cell…

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: A scientist collects cells at various points in the cell cycle and isolates DNA from them. Using…

A: Cell division is a process in which a single cell divides into two or more cells. The two daughter…

Q: A scientist collects cells at various points in the cell cycle and isolates DNA from them. Using…

A: Cell division is a process in which a single cell divides into two or more cells. Mitosis is a type…

Q: the time a cell has reached the end of prophase, all of the following have occurred EXCEPT -  a…

A: The cell cycle is the series of cyclic events that takes place to cause cell division. There are two…

Q: METAPHASE OF ONION ROOT CELL (PLANT CELL)   describe the appearance of DNA, spindle fibers and…

A: To divide, a cell must accomplish many things: expand, reproduce its genetic material (DNA), and…

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 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: 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: For a given bacterial cell, binary fission occurred before chromosomal DNA replication happened. Is…

A: Binary fission Binary fission can be described as the biological process which generates a new cell…

Q: you add radioactive thymine to a culture of eukaryotic cells that are all currently in S phase.…

A: Techniques for radioactive labelling are crucial for understanding how bacteria make DNA. Because…

Q: In eukaryotic cells, which occurs during the prophase of mitosis?   A. appearance of the nuclear…

A: Mitosis is a phase of cell cycle in which replicated chromosomes are divided into two new…

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: Explain why can a clone can be produced from a single body cell adult?

A: Clones are organisms shaped by the asexual technique of replica. it's the assembly of a replacement…

Q: You are studying bacterial cells and you find bacteria with a mutation that causes it to produce…

A: The DNA is double stranded in the bacteria .    During the replication these two strands of the DNA…

Q: X-rays strike a chromosome in a living cell and ultimately cause the cell to die. Did the X-rays…

A: Introduction  Radiation such as X rays are harmful to the mankind, they have high energy value and…

Q: Why is it important for DNA to be duplicated before mitosis

A: All the cells undergo differentiation and regeneration in order to grow and develop into tissues…

Q: . In yeast, you have sequenced a piece of wild-type DNAand it clearly contains a gene, but you do…

A: Introduction  In the RDT (recombinant DNA technology), we insert the segment of DNA into the vector…

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…

Q: Hypothetically, a cell has DNA that weighs 10 picograms. This cell goes through S phase and is about…

A:

Q: A diagram of a linear chromosome is shown here. The end of each strand is labeled with A, B, C, or…

A: DNA polymerase shows 5'-3' activity that means DNA polymerases catalyze the synthesis in the 5' → 3'…

Q: The nuclear chromosomes in all of the cells of the clone are derived only from the somatic nuclear…

A: Introduction: Somatic cell nuclear transfer (SCNT) is a laboratory technique to create a living…

Q: Explain the cells replicate for two generations ? Define the process ?

A: There are two main types of cell division namely mitosis and meiosis. The term “cell division,”…

Q: Does reproductive cloning always involve somatic cell nuclear transfer?

A: Gene cloning refers to the cloning fo genes through various techniques. These copies of genes can be…

Q: In the example below, how many chromosomes are in each cell in prophase and anaphase? a. 8and8 b.…

A: Prophase and anaphase are two phases of the mitotic cell division. Prophase is the first stage in…

Q: Which of the following chromosomes is replicated? a. b. C.

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: A. In 1952, the nucleus of a _______________________ embryo was placed into a donor cell.  Was the…

A: Cloning is defined as a process in which genetically identical organisms are produced either…

Q: A panel of cell lines was created by human–mouse somatic-cell hybridization. Each line was examined…

A: Beadle and Tatum proposed one gene one enzyme hypothesis according to which a particular gene is…

Q: Explain why telomerase required in dividing cells but not required in cells that do not divide

A: The ends of the DNA molecules which contitute our chromosomes are protected by little structures…

Q: When studying living cells in a laboratory, researchers sometimesuse drugs as a way to cause cells…

A: A sequence of stages known collectively as the cell cycle are actively separated by eukaryote cells:…

Q: Once in human cells, which of the following statements might best describe how COVID19 replicates?…

A: Coronaviruses make full-length copies of their genomic RNA, which are integrated into freshly formed…

Q: You are running general tests in a cell solution and you have detected a large concentration Single…

A: Cell cycle is sequence of events before cell division occurs, it prepares cell for division. Without…

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: