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Which of the following statements about homologous chromosomes is true?

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Wize University Biology Textbook > Meiosis

Meiosis I

6 Activities

Wize University Biology Textbook > The Cell Cycle

Mitotic Phase of Cell Cycle

7 Activities

Wize University Biology Textbook > The Cell Cycle

The Genome & Chromosomal Structure

2 Activities

Which of the following statements about homologous chromosomes is true?
More Meiosis I Questions:
Which of the following is present in meiosis, but not mitosis?
At the end of meiosis the number of chromosome in daughter cells is ___ compared to the parent cell.
Meiosis
Pairs of homologous chromosome move to the equator of the cell during
Meisois
At the end of meiosis II you get four daughter cells. These daughter cells are
haploid
Crossing over
Crossing over occurs in which phase of meiosis?
Complete the following table:
Which of the following describes a newly fertilized human zygote?
During what stage do homologous chromosomes separate?
Which of the following definitions is incorrect?
Which of the following is not a method for enhancing genetic diversity?
During what stage do homologous chromosomes separate?
Practice: Crossover
What are the genotypes of the possible daughter cells that would result from the single crossover shown below?
Select all that apply.
Which of the following describes the differences between mitosis and meiosis?
1. Mitosis occurs in autosomal cells while meiosis in gamete cells
2. Mitosis involves undergoing cell division twice
Practice: Meiosis
Place the following stages of meiosis in order in which they occur.
In which of the following groups would you find meiosis?
1. Humans
2. Photosynthetic cyanobacteria
Which of the following is present in meiosis, but not mitosis?
Capsella bursa-pastoria and Capsella grandiflora are two very closely related species. Flow cytometry analysis shows that somatic cells in G1 phase of C. bursa-pastoria cells contain a 0.80 pg of DNA, while C. grandiflora has 0.44 pg.
What does this suggest about the ploidy of these two species?
What would the C-value of these two species be?
Practice: Meiosis (Non-disjunction vs. Mis-division)
Julia has triple X syndrome, meaning she has three X chromosomes. On one X she has an SNP that she shares with her paternal grandmother, one has an SNP that she shares with her maternal grandfather. When did this aneuploidy happen to cause Julia to have this syndrome?
Meiosis I in the mother
Meiosis I in the father
What are the major sources of genetic variation resulting from sexual reproduction?
i. Recombination during prophase I
ii. Recombination during prophase II
Two-toed sloths have a chromosome number 2n=50. How many chromatids would be found at the start of prophase II, and immediately at the end of meiosis II?
If you overheard someone in your biology class say that “plants are haploid and make gametes by mitosis, while animals are diploid and make gametes by meiosis”, would you agree or disagree with this statement, and why?
Drosophila have a red versus white eye color gene that is sex linked. A white-eyed female mates with a red-eyed male giving a red-eyed female offspring with the genotype XXY. Where was the mistake in meiosis?
Which of the following is the most likely to give rise to Copy Number Variations?
Imagine an alien from a distant planet that has 70 pairs of chromosomes. This alien has a mother with a serious mutation on chromosome 67. This alien, however, does not carry this deleterious allele on chromosome 67. Which of the following best describes how this chromosome was able to “repair itself”?
Anna has an extra chromosome 12. Of her three chromosome 12’s she shares an SNP
that is found on one of her mother’s chromosome 12’s. If Anna’s aneuploidy is due to a
single mistake in meiosis, which of the following steps of meiosis did the mistake occur?
What are the major sources of genetic variation resulting from sexual reproduction?
i. Recombination during prophase I
ii. Recombination during prophase II
Two-toed sloths have a chromosome number 2n=50. How many chromatids would be
found at the start of prophase II, and immediately at the end of meiosis II?
If you overheard someone in your biology class say that “plants are haploid and make
gametes by mitosis, while animals are diploid and make gametes by meiosis”, would you
agree or disagree with this statement, and why?
An alien from a distant planet has 70 pairs of chromosomes. How many individual
chromatids would a single cell undergoing meiosis have at metaphase II?
Which of the following best describes how a chromosome is able to “repair itself”?
Individuals with Down’s syndrome have a trisomy of chromosome 21 that arose from a single error in meiosis. Imagine a child, Bella, who has parents with normal karyotypes. Only 1 of Bella’s chromosomes carries the same SNP as is found in her father. Which of the follow stages of meiosis could this error have occurred?
Meiosis I in the mother
Meiosis I in the father
Practice: Meiosis (n and C-values)
The frog species Xenopus tropicalis has 10 chromosomes and this species is viable with 4 copies of its genome. An individual with four copies of its genome would have what ploidy and what C-value coefficents at anaphase II of meiosis?
What are the two phases of meiosis that are the source of most of the variation in the four resulting daughter cells?
Which of the following is a source of genetic variability?
What do chiasmata indicate?
During what stage do homologous chromosomes separate?
Which of the following definitions is incorrect?
Which of the following is not a method for enhancing genetic diversity?
Which of the following is present in meiosis, but not mitosis?
Which of the following is the physical basis for Mendel's principle of segregation?
Practice: Meiosis I
What do chiasmata indicate?
Meiosis practice problem 1
What are the genotypes of the possible daughter cells that would result from the double crossover shown below?
In what stage of meiosis does independent assortment of chromosomes occur?
An alien from a distant planet has 70 pairs of chromosomes. How many individual
chromatids would a single cell undergoing meiosis have at metaphase II?
During what stage do homologous chromosomes line up beside each other?
Which of the following is present in meiosis, but not mitosis?
More Mitotic Phase of Cell Cycle Questions:
If you were to stain proteins in a dividing cell to determine which stage it is in, which of the following protein would you design a fluorescent tag for to visualize a cell in telophase?
A mouse has 20 pairs of chromosomes. How many individual sister chromatids would a mouse cell have at metaphase?
If you were to stain proteins in a dividing cell to determine which stage it is in, which of the following protein would you design a fluorescent tag for to visualize a cell in telophase?
A mouse has 20 pairs of chromosomes. How many individual sister chromatids would a mouse cell have at metaphase?
Mitosis
Colchicine is a chemotherapeutic drug that is used to inhibit the polymerization of tubulin dimers. Which of the following steps of the cell cycle would be most affected by colchicine treatment?
Which of the following is present in meiosis, but not mitosis?
Complete the following table:
Genome
A diploid cell that is 2n = 4 receives a2, b2, and c2 alleles from one parent, and a1, b2, and c2 alleles from the other parent. Alleles a and b are on the same chromosome, while allele c is on another one.
Draw the resulting cell after DNA replication.
Genome
A cell has a genotype a1/a2, c3/c3. Draw the cell before and after DNA replication.
In animal cells, during which phase do centrioles begin to move apart?
Dogs are 2n=782n=78. A somatic dog cell undergoes mitosis. How many chromosomes are there during metaphase and anaphase, respectively?
In which phase of mitosis do chromosomes dencondense?
In which phase of mitosis does the mitotic spindle get broken down?
In which phase do chromosomes become fully condensed?
Complete the following table:
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 has 4 pairs of chromatids in prophase will have how many chromatids during telophase?
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?
Dogs are 2n=782n=78. A somatic dog cell undergoes mitosis. How many chromosomes are there during metaphase and anaphase, respectively?
A human cell has received a mutation and is unable to produce actin. What would be the result after mitosis?
If a cell contained 4 chromosomes during prophase, how many chromosomes and chromatids would it have during prometaphase?
Cell cycle practice problem 3
Complete the following table for a cell that has the genetic formula 2n = 22
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"
Cell cycle practice problem 1
A scientist grows some cells in a medium containing radioactive nucleotides, so all of the DNA within the cells are radioactive. She then transfers the cells to a medium containing normal nucleotides, and allows them to divide. If a cell undergoes one round of mitosis, what percentage of the daughter cells' DNA will be radioactive?
What is the genetic formula for the diploid cell shown below?
Cats have 19 chromosomes and are diploid. How many strands of DNA are there in a non-dividing cat skin cell?
Genome practice problem 1
A cell has the genetic formula n=8n=8. Draw how the cell would look after DNA replication.
Which of the following is different between mitosis metaphase and meiosis metaphase II
Which of the following definitions is incorrect?
Which of the following is not a method for enhancing genetic diversity?
A human cell received a mutation and is unable to produce actin. What would be the result after mitosis?
If a cell contained 4 chromosomes during prophase, how many chromosomes and chromatids would it have during prometaphase?
Which step of mitosis do sister chromatids get separated?
How can FACs be used to quantify the amount of cells in different phases of the cell cycle?
Which of the following describes the differences between mitosis and meiosis?
1. Mitosis occurs in autosomal cells while meiosis in gamete cells
2. Mitosis involves undergoing cell division twice
Anaphase A and B differ in the following way(s). Select all that apply.
Which of the following statements are CORRECT?
1. Mitotic events can be observed with a light microscope
2. Sister chromatids are generated during prophase
Practice: Mitosis
Use the following image of diving onion root cells to answer the following 4 questions:
Practice: Mitosis
Complete the following table based on a cell that is 2n=12
In which of the following groups would you find meiosis?
1. Humans
2. Photosynthetic cyanobacteria
Which of the following is present in meiosis, but not mitosis?
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"
Cell cycle
In order, what are the phases of the Mitotic (M) phase of the cell cycle?
Telomeres
A human cell as 23 pairs of chromosomes. What is the total number of telomeres found at prophase of mitosis?
If you overheard someone in your biology class say that “plants are haploid and make gametes by mitosis, while animals are diploid and make gametes by meiosis”, would you agree or disagree with this statement, and why?
Which of the following characteristics are the same in both meiosis II and mitosis?
Which of the following is correct regarding the movement of chromosomes during anaphase?
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?
i. Condensed chrosmosomes
ii. A single centrosome
A flowering plant has 20 pairs of chromosomes. How many telomeres would a gametophyte somatic cell have at prophase of mitosis?
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?
From Term Test 2 Prep: A mouse has 20 pairs of chromosomes. How many individual telomeres would a mouse cell have at metaphase?
From Term Test 1 Prep: If you were to stain proteins in a dividing cell to determine which stage it is in, which of the following protein would you design a fluorescent tag for to visualize a cell in telophase?
From Term Test 1 Prep: A mouse has 20 pairs of chromosomes. How many individual sister chromatids would a mouse cell have at metaphase?
Mitosis
Colchicine is a chemotherapeutic drug that is used to inhibit the polymerization of tubulin dimers. Which of the following steps of the cell cycle would be most affected by colchicine treatment?
Mitosis
Researchers often want to visualize what stage of the cell cycle their cells are in. Which of the following proteins could a researcher stain in order to identify cells in metaphase?
1. Actin
2. Tubulin
Chromosome Multiple Choice Question
Which of the following is not true regarding the centromere in metaphase chromosomes?
A cell that contains 24 sister chromatids in prophase would contain how many chromosomes at G1 of the next cell cycle?
A cell that contains 8 chromosomes at G1 will have how many chromosomes after anaphase?
Which of the following statements are CORRECT?
1. Mitotic events can be observed with a light microscope
2. Sister chromatids are generated during prophase
The stage of the cell cycle where one cell splits into two is called _______
How do the daughter cells at the end of mitosis and cytokinesis compare with their parent cell when it was in the G2 stage of the cell cycle?
You are able to observe 16 centromeres in a cell under a powerful microscope during prometaphase – how many sister chromatids does the organism have?
During the entirety of what cell cycle stage(s) can individual chromosomes be observed under a light microscope?
You are studying the cell cycle and observe a cell in the lab with two nuclei, which of the following is a likely explanation?
If you removed a cells’ centrioles with an incredibly fine needle during mitosis, what stage would be affected?
During mitosis, all of the following occur except:
Which of the following is different between mitosis metaphase and meiosis metaphase II
Which of the following is present in meiosis, but not mitosis?
At what phase of mitosis does the nuclear envelope first fragment?
Which of the following is true of cytokinesis in animals?
If a cell contained 4 chromosomes during prophase, how many chromosomes and chromatids would it have during prometaphase?
What is the difference between mitosis metaphase and meiosis metaphase II?
Practice: Mitosis 1
A cell has 10 chromosomes in G1 phase. After prometaphase, how many duplicated chromosomes are present?
Which of the following statements about homologous chromosomes is true?
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"
Which of the following is present in meiosis, but not mitosis?
A centromere joins a pair of
Is the process of mitosis the same in plant and animal cells?
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 overheard someone in your biology class say that “plants are haploid and make
gametes by mitosis, while animals are diploid and make gametes by meiosis”, would you
agree or disagree with this statement, and why?
Which of the following characteristics are the same in both meiosis II and mitosis?
Is the process of mitosis the same in plant and animal cells?
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?
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?
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))
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:
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))
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.