A temperature-sensitive mutant yeast strain stops dividing when shifted from 25°C to 37°C.  These cells are analyzed at different temperatures by a machine that measures the amount of DNA they contain, and the following graphs are obtained. Cells in G1 phase should have ___ unit(s) amount of DNA. Which of the following would explain the behavior of your mutant? Mark yes or no for each of the following choices.  Inability to initiate DNA replication       Defect in chromosome condensation      Defect in centrosome duplication      Defect in cytokinesis

Q: Complete the following statements by selecting one of the options provided. A mutation that…

A: The series of events that take place in a cell to divide it into two daughter cells is known as cell…

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

A: DNA The genetic material present in almost all eukaryotic cell.

Q: This cell contains an equal Mitochondria number of mitochondria segregate randomly in cell division.…

A: Cytoplasmic inheritance Is defined as the transfer of genes outside the nucleus i.e., transfer of…

Q: Chromatin fibers composed of roughly equal amounts of DNA and protein molecules make up the…

A: Chromatin fibers can be defined as the condensed form of the chromosomes formed by wrapping the DNA…

Q: True

A: DNA is genetic material in all the living organisms.

Q: onsider the following statements about polytene chromosomes. Which are true? More than one answer…

A: Polytene chromosomes are large eukaryotic chromosomes which have multiple DNA strands (chromatids)

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: You isolate a cell from a yeast species (a eukaryote) where n = 8, apply a chemical that forces…

A: Cell cycle is the series of events that take place in a cell. During the cell cycle, a cell prepares…

Q: You are studying the M-cyclin. You treat mitotic cells with an inhibitor of the proteasome and find…

A: "Cell cycle checkpoints" are eukaryotic cell cycle regulation mechanisms. It guarantees that they…

Q: According to the question，how do we know if we see more than 2 copies ，it indicate the cell is…

A: The cell cycle is a sequence of events by which a cell duplicates its genome and synthesis other…

Q: You are studying cancer progression in mice. Your results show the following pathway in which two…

A: From the given data the observations made are: The experiment is conducted in a nutrient-enriched…

Q: A cultured mouse cell line has a mutation in a gene encoding a ribosomal protein. The mutant protein…

A: Chaperones are a kind of protein with similar properties that aid in protein folding. These proteins…

Q: A farmer decides to use insecticide to prevent insects from eating their crops. This insecticide…

A: Cells are the biological, structural and functional unit of an organism. Cell has a nucleus. Nucleus…

Q: Which of the following statements about heterochromatin is FALSE?     It contains…

A: The false statement from the given choices is:Histone proteins in heterochromatin are heavily…

Q: It is often useful for scientists to study a population of cells that are all at the same stage of…

A: The cell must undergo division for growth and development. The process of undergoing a cascade of…

Q: Question 3: A woman suffers from albinism and is also a carrier for haemophilia. Draw a well-…

A:

Q: hat are the enzymes that untwist the double helix at the replication forks called? -Helicases…

A: Answer 1:  Helicases are the enzyme that untwists the double helix at the replication fork.…

Q: Which of the following events destabilize microtubules at the kinetochore? O Preventing Ndc80…

A: A chromosome has two microtubules arising from its kinetochore. In the anaphase, the kinetochore…

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: 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: Although most cases of cystic fibrosis are inherited in an autosomal recessive manner, it is…

A: Inheritance is the process of transmitting the traits from parent to offspring. Traits of an…

Q: Question 1

A: The objective of the question is to match the descriptions of the Y chromosome during different…

Q: Cells of random sizes (some very small) are formed after cell division Normal sized cells are formed…

A: This ftsz protein that stands for filamentous temperature-sensitive protein Z plays a very important…

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: ich of the following statements is TRUE? Group of answer choices a Interphase chromosomes are…

A: Over 3 billion base pairs, or nucleotides, make up the human genome. Every protein and genetic…

Q: Cancer cells typically lose cell cycle entry control. Explain how the following mutations, which are…

A: Mutations are changes or alterations that occur in the DNA. Mutagens are the agents that are…

Q: A cell that has begun to replicate its DNA cannot become quiescent (enter G0). True or False?

A: G0 phase can be defined as a cellular phase that lies outside the cell cycle. It is also known as…

Q: A person with cancer walks into the classroom.  As a biology class, we ask if we can examine some of…

A: Aneuploidy is the condition in which abnormal number of chromosomes are seen in the cell.Normally…

Q: Three students are conducting an experiment to determine how much time onion root tip cells spend in…

A: There are two types of cell division found in our body, namely mitosis and meiosis. Mitosis occurs…

Q: a) In hereditary retinoblastoma tumors, Rb is mutated. Among the following mutations, which one is…

A: The tumor suppressor protein Rb (Retinoblastoma protein) plays a crucial role in regulating the cell…

Genetic Evolution

Sexual reproduction produces distinct population variations. Heredity determines the traits and qualities to be passed down to the progeny. Over time, this variation within-species is also affected by the process of human evolution. The study of how genetic variation leads to evolutionary changes is known as genetic evolution. If a trait helps an organism to survive and reproduce, it is more likely to be passed down the generations. It is rare that such traits result in a completely distinct set of traits in descendants than the ancestral population; this can result in the emergence of a new species.