Concept explainers
To determine: The proper chromosomal constitution of a cell.
Introduction: Chromosome is a part of DNA that contains all genetic information. The chromosome is consisting of a packaging protein that binds with condense DNA molecules to prevent from the unmanageable problem.
Explanation of Solution
Cell division is an important event in which the division of parental cells leads to the two or more daughter cells. The cell division is taken place by mitosis and meiosis. Mitosis involves a single nuclear division after
Whereas, meiosis involves two nuclear division without DNA replication and produces four daughter cells. Every daughter cells contain half of the original number of chromosomes because crossing over takes place in the prophase I of meiosis.
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Chapter 11 Solutions
BIOLOGY (LL) W/ACCESS
- Q1: When is DNA replicated during the cell cycle? Q2: When in the cell cycle does DNA separate into the two genetically identical daughter cells? Q3: If a cell is not destined to separate into daughter cells, what phase does it enter? Is this part of the cell cycle?arrow_forwardNeed help with question: - if a nucleus has 12 chromosomes when it begins meiosis, how may chromosomes dose it have after telophase I ? How many are there after telophase II? - which meiotic phases underlie variation? - why is it advantageous for a species to have variation with in genetic material? When is it a disadvantage?arrow_forwardIDENTIFICATION (Subject - Developmental Biology) 1. Process when one embryonic region interacts with the second and affecfs the second regions differentiation or behaviour. 2. Visible rings produced from repeated DNA replication without separation of the newly formed stands. 3. Stage when cells cannot retain themselves and unable to maks protiens.arrow_forward
- Objective: To review the phases of mitosis with the understanding that in a real tissue or a non-synchronized cell culture, different mitotic phases and cells in interphase will be observed at a certain time. Interphase is the period between mitotic events; all other phases are part of mitosis and their individual probabilities add up to the total probability of seeing cells undergoing mitosis. Pay attention to the individual probabilities for cells in each phase of the cell cycle. Problem N° 10 For a certain type of animal tissue, the probability of a randomly selected cell being in a particular stage of the interphase/mitosis cycle is given by the following table: Stage Probability Interphase 0.5 Prophase 0.1 Metaphase 0.05 Anaphase 0.2 Telophase 0.15 Suppose you examine 100 cells at random from this tissue. A) How many cells do you expect to see in metaphase? _____ cells B) You have selected a high magnification (2000 X) in your…arrow_forwardTask: Show your work/explain your reasoning as much as possible Grading Criteria: I want the correct answer and I want to see your work or read an explanation of your reasoning. Question If a certain species has a DNA content of 12 picograms in each diploid cell's nucleus when the cell in in G1 of the cell cycle, what would be the expected DNA content (in picograms) of a triploid cell (from the same species) in mitotic prophase? Consider ploidy changes and/or chromosome form changes, if applicable, when explaining your reasoning.arrow_forwardPlease ASAP Consider a diploid species with a deploid number 2. Show your work and explain your part. A. If a typical haploid gemete from this species contains DNA with a mass of 36 picograms of DNA would be in a typical somatic cell in G1 of the cell cycle?arrow_forward
- Q. 2 Elaborate reproduction in somatic and embryonic cells.arrow_forwardTask: Show your work/explain your reasoning as much as possible. Grading Criteria: I want the correct answer and I want to see your work or read an explanation of your reasoning. Question: If a certain species has a DNA content of 5 picograms in each diploid cell's nucleus when the cell in in G1 of the cell cycle, what would be the expected DNA content (in picograms) of a diploid cell (from the same species) in mitotic prophase? Explain your reasoning. Consider ploidy changes and/or chromosome form changes, if applicable, when explaining your reasoning.arrow_forwardHELP PLEASEE, 5 SENTENCE AND EXAMPLE What do you think will happen if mitosis is the end point of cell Division?arrow_forward
- Multiple question 1.) Which of the following statements is true about mitosis and meiosis? A.) Mitosis results in formation of two daughter cells , and occurs in germ cells; whereas, meiosis results in formation of four daughter cells, and occurs in the liver. B.) Mitosis results in formation of four daughter cells, and occurs in somatic cells; whereas , meiosis results in formation of two daughter cells, divisions and occurs in germ cells C.) Mitosis results in formation of four daughter cells, and occurs in germ cellswhereas, meiosis results in daughter cells, and occurs in liver cells D.) Mitosis results in formation of two daughter cells, and occurs in somatic cellswhereas , meiosis results in formation of four daughter cellsand in germ cells. 2.) Which of the following plant parts is usually used for studying mitotic cell division A.) stem tip B.) root tip C.) bud D.) flower 3.) The cell cycle proceeds at an uncontrolled rate among cancer cells. Which of the following…arrow_forwardQ1: Name one similarity between cell division in prokaryotes and eukaryotes. Q2: Why is binary fission referred to as “asexual reproduction”? Q3: Name one difference between cell division in prokaryotes and eukaryotes.arrow_forwardStill studying meiosis. How many chromosomes does a haploid cell have? In prophase II how many chromosomes does each daughter cell have?arrow_forward
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