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Cell Cycle

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Wize University Biology Textbook > The Cell Cycle

The Genome & Chromosomal Structure

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Wize Grade 12 Biology Textbook > The Cell Cycle [AB]

The Cell Cycle

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The frog species Xenopus laveis has four copies of its genome in every somatic cell. What are the coefficients of n and C, respectively, of a Xenopus cell before S phase and after S phase? (Listed as: n, C (before) : n, C (after))
More The Genome & Chromosomal Structure Questions:
Cell Cycle
The frog species Xenopus laveis has four copies of its genome in every somatic cell. What are the coefficients of n and C, respectively, of a Xenopus cell before S phase and after S phase? (Listed as: n, C (before) : n, C (after))
Which of the following statements about homologous chromosomes is true?
Genome structure
Which of the following statements are true and which are false:
A. The number of unique genes in an organisms determines its genome size
B. A species with low gene density has really large introns.
Genes & Alleles
Consider a wheat variety with a karyotype n=5 and 4n= 20.
What ploidy is this wheat variety?
How many different alleles of a gene can you find in an individual of this wheat?
C-value of the Karyotype
How many copies of the genome are found in the following karyotype of the Green Toad:
A centromere joins a pair of ______
Where are centrioles located?
Choose all the choices that describe epigenetic modification.
Which of the following statements about homologous chromosomes is true?
Which of the following described alleles?
Practice Problem 1
Which of the following statements are true, and which are false? Explain.
a. Histones are negatively charged.
b. The histone octamer consists of four H1, each paired with one of H2A, H2B, H3, or H4.
More The Cell Cycle Questions:
A mouse has 20 pairs of chromosomes. How many individual sister chromatids would a mouse cell have at metaphase?
A mouse has 20 pairs of chromosomes. How many individual sister chromatids would a mouse cell have at metaphase?
Cell Cycle
The frog species Xenopus laveis has four copies of its genome in every somatic cell. What are the coefficients of n and C, respectively, of a Xenopus cell before S phase and after S phase? (Listed as: n, C (before) : n, C (after))
You observe 16 centromeres in a cell under a microscope during interphase, how many chromosomes does the organism have?
During mitosis, all of the following occur except:
A cell that contains 8 chromosomes at G1 will have how many chromosomes at anaphase?
A cell that contains 24 sister chromatids in prophase would contain how many chromosomes at interphase of the next cell cycle?
Which of the following definitions is incorrect?
Cell cycle practice problem 2
A cell is 2n=82n=8and has the genotype a2/a2, b1/b2, c1/c2, d2/d2. Draw the cell:
a) in "G1 phase"
b) At "metaphase"
Which of the following would you make a fluorescent tag for if you wanted to take a fluorescent image of the contractile ring during cytokinesis?
You tag guanines with fluorescent tags and add them to the cell during S phase of the cell cycle. When you look at these chromosomes at metaphase of mitosis using a fluorescent microscope, where on the sister chromosomes would you find fluorescent signal?
If you were to look at a dividing somatic cell in prometaphase under a microscope, what
structures could you see clearly given that you would be able to see all structures of the
cell without an appropriate stain?
You tag guanines with a fluorescent tag and add it to the cell during S phase of the cell cycle. When you look at these chromosomes at metaphase of mitosis using a fluorescent microscope, where on the sister chromosomes would find fluorescent signal?
Which of the following best describes how a chromosome is able to “repair itself”?
Which of the following statements regarding the life cycle of plants is correct?
Given no errors in replication or chromosome segregation, all gametophytes will have the same genotype
A sporophyte at the end of S phase will be 4C
From Term Test 2 Prep: An animal cell is 3n and 6C at prophase. What are the n and C-values of this cell in G1?
An animal cell is tetraploid (4n) and is going through the cell cycle. What are the n- and C-values of this cell at G2 of the cell cycle?
From Term Test 1 Prep: A mouse has 20 pairs of chromosomes. How many individual sister chromatids would a mouse cell have at metaphase?
If you treated a cell with a chemical that inhibits helicase, would happen to the replication bubble during S phase of the cell cycle?
Cell Cycle
The following diagram shows a normal gamete with 3 chromosomes being fertilized by an abnormal gamete. What would be the C-value coefficient of this zygote in G2 of the cell cycle?
Where can DNA replication occur outside of a cell’s S-phase?
Practice: Mitosis 1
A cell has 10 chromosomes in G1 phase. After prometaphase, how many duplicated chromosomes are present?
Practice: Cell Cycle 2
A cell is 2n=82n=8and has the genotype a2/a2, b1/b2, c1/c2, d2/d2. Draw the cell:
a) in "G1 phase"
b) At "metaphase"