At metaphase, chromosmes are attached to the spindle fibres by their

At metaphase, chromosmes are attached to the spindle fibres by their
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At metaphase, chromosmes are attached to the spindle fibres by their A. Centromere B. Satellites C. Secondary cnstrictions D. Kinetochores
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At metaphase, chromosomes are attached to the spindle fibres by their (a) satellites (b) secondary constrictions (c) kinetochores (d) centromeres.

Description : At metaphase, chromosomes are attached to the spindle fibres by their (a) satellites (b) secondary constrictions (c) kinetochores (d) centromeres.

Last Answer : (c) kinetochores

During the metaphase stage of mitosis, spindle fibres attach to chromosomes at (a) kinetochore (b) both centromere and kinetochore (c) centromere, kinetochore and areas adjoining centromere (d) centromere.

Description : During the metaphase stage of mitosis, spindle fibres attach to chromosomes at (a) kinetochore (b) both centromere and kinetochore (c) centromere, kinetochore and areas adjoining centromere (d) centromere.

Last Answer : a) kinetochore

A stage of mitosis is shown in the diagram. Which stage is it and what are its characteristics? (a) Metaphase - Spindle fibers attached to kinetochores, centromeres split and chromatids separate. (b) Metaphase - Chromosomes moved to spindle equator, chromosomes made up of two sister chromatids. (c) Anaphase - Centromeres split and chromatids separate and start moving away. (d) Late prophase - Chromosomes move to spindle equator.

Description : A stage of mitosis is shown in the diagram. Which stage is it and what are its characteristics? (a) Metaphase - Spindle fibers attached to kinetochores, centromeres split and chromatids ... chromatids separate and start moving away. (d) Late prophase - Chromosomes move to spindle equator.

Last Answer : (b) Metaphase - Chromosomes moved to spindle equator, chromosomes made up of two sister chromatids.

Assertion :- Each chromatid is attached with two spindle fibres during S-phase :- Reason :- During Anaphse-I each chromosome is found in bivalent form

Description : Assertion :- Each chromatid is attached with two spindle fibres during S-phase :- Reason :- During Anaphse-I each chromosome is found in bivalent form

Last Answer : Assertion :- Each chromatid is attached with two spindle fibres during S-phase :- Reason :- During ... . D. If both Assertion & Reason are false.

Colchicines prevent the spindle formation during: (a) Prophase (b) Metaphase (c) Anaphase (d) Telophase

Description : Colchicines prevent the spindle formation during: (a) Prophase (b) Metaphase (c) Anaphase (d) Telophase

Last Answer : Ans. ((b))

Select the correct option with respect to mitosis. (a) Chromatids separate but remain in the centre of the cell in anaphase. (b) Chromatids start moving towards opposite poles in telophase. (c) Golgi complex and endoplasmic reticulum are still visible at the end of prophase. (d) Chromosomes move to the spindle equator and get aligned along equatorial plate in metaphase.

Description : Select the correct option with respect to mitosis. (a) Chromatids separate but remain in the centre of the cell in anaphase. (b) Chromatids start moving towards opposite poles in telophase. (c ... . (d) Chromosomes move to the spindle equator and get aligned along equatorial plate in metaphase.

Last Answer : (d) Chromosomes move to the spindle equator and get aligned along equatorial plate in metaphase.

What are spindle fibres? -Biology

Description : What are spindle fibres? -Biology

Last Answer : Spindle fibers form a protein structure that divides the genetic material in a cell. The spindle is necessary to equally divide the chromosomes in a parental cell into two daughter cells during ... division: mitosis and meiosis. During mitosis, the spindle fibers are called the mitotic spindle.

What is the function of the spindle fibres? -Biology

Description : What is the function of the spindle fibres? -Biology

Last Answer : Spindle fibers form a protein structure that divides the genetic material in a cell. The spindle is necessary to equally divide the chromosomes in a parental cell into two daughter cells during ... division: mitosis and meiosis. During mitosis, the spindle fibers are called the mitotic spindle.

What organelles produce spindle fibres? -Biology

Description : What organelles produce spindle fibres? -Biology

Last Answer : Centrioles produce spindle fibers in animal cells. These spindle fibers are active during mitosis when the DNA has replicated and the chromosomes are pulled apart during anaphase. Plants cells do not have centrioles but they still undergo mitosis.

Centrioles are present only in animals. In such a case how the spindle fibres are held in the cell division of plants? -Biology

Description : Centrioles are present only in animals. In such a case how the spindle fibres are held in the cell division of plants? -Biology

Last Answer : answer:

Assertion :- Kinetochore is essential for cell division. Reason :- Kinetochores serve as the sites of attachment of spindle fibres to the chromosome.

Description : Assertion :- Kinetochore is essential for cell division. Reason :- Kinetochores serve as the sites of attachment of spindle fibres to the chromosome.

Last Answer : Assertion :- Kinetochore is essential for cell division. Reason :- Kinetochores serve as the sites of ... D. If both Assertion & Reason are false.

Part of Chromosome which joins with spindle fibres is -

Description : Part of Chromosome which joins with spindle fibres is -

Last Answer : Part of Chromosome which joins with spindle fibres is - A. Chromatid B. Chromonema C. Chromomere D. Centromere

In animal cell xhich structure is thougth to produce the spindle fibres that help separate the sister chromatids during anaphase?

Description : In animal cell xhich structure is thougth to produce the spindle fibres that help separate the sister chromatids during anaphase?

Last Answer : What is the answer ?

Stretch reflex: a. is a monosynaptic reflex with a response time of 1 msec b. originates in the muscle spindle which sends off impulses in type Ia nerve fibres c. is intensified by impulses in the gamma efferent fibres d. all above

Description : Stretch reflex: a. is a monosynaptic reflex with a response time of 1 msec b. originates in the muscle spindle which sends off impulses in type Ia nerve fibres c. is intensified by impulses in the gamma efferent fibres d. all above

Last Answer : all above

Synapsis occurs between (a) mRNA and ribosomes (b) spindle fibres and centromere (c) two homologous chromosomes (d) a male and a female gamete.

Description : Synapsis occurs between (a) mRNA and ribosomes (b) spindle fibres and centromere (c) two homologous chromosomes (d) a male and a female gamete.

Last Answer : (c) two homologous chromosomes

Which of the following is not a characteristic feature during mitosis in somatic cells? (a) Chromosome movement (b) Synapsis (c) Spindle fibres (d) Disappearance of nucleolus

Description : Which of the following is not a characteristic feature during mitosis in somatic cells? (a) Chromosome movement (b) Synapsis (c) Spindle fibres (d) Disappearance of nucleolus

Last Answer : (b) Synapsis

Spindle fibres attach on to (a) centromere of the chromosome (b) kinetosome of the chromosome (c) telomere of the chromosome (d) kinetochore of the chromosome.

Description : Spindle fibres attach on to (a) centromere of the chromosome (b) kinetosome of the chromosome (c) telomere of the chromosome (d) kinetochore of the chromosome.

Last Answer : (d) kinetochore of the chromosome.

Microtubules are absent in (a) mitochondria (b) flagella (c) spindle fibres (d) centrioles.

Description : Microtubules are absent in (a) mitochondria (b) flagella (c) spindle fibres (d) centrioles.

Last Answer : (a) mitochondria

Microtubules are the constituents of (a) centrioles, spindle fibres and chromatin (b) centrosome, nucleosome and centrioles (c) cilia, flagella and peroxisomes (d) spindle fibres, centrioles and cilia.

Description : Microtubules are the constituents of (a) centrioles, spindle fibres and chromatin (b) centrosome, nucleosome and centrioles (c) cilia, flagella and peroxisomes (d) spindle fibres, centrioles and cilia.

Last Answer : (d) spindle fibres, centrioles and cilia

Characteristics of smooth muscle fibres are (a) spindle-shaped, unbranched, nonstriated, uninucleate and involuntary (b) spindle-shaped, unbranched, unstriped, multinucleate and involuntary (c) cylindrical, unbranched, unstriped, multinucleate and involuntary (d) cylindrical, unbranched, striated, multinucleate and voluntary.

Description : Characteristics of smooth muscle fibres are (a) spindle-shaped, unbranched, nonstriated, uninucleate and involuntary (b) spindle-shaped, unbranched, unstriped, multinucleate and involuntary (c ... , multinucleate and involuntary (d) cylindrical, unbranched, striated, multinucleate and voluntary.

Last Answer : (a) spindle-shaped, unbranched, nonstriated, uninucleate and involuntary

If you are provided with root-tips of onion in your class and are asked to cont the chromosmes, which of the following stages can your most convenintl

Description : If you are provided with root-tips of onion in your class and are asked to cont the chromosmes, which of the following stages can your most convenintl

Last Answer : If you are provided with root-tips of onion in your class and are asked to cont the chromosmes, ... A. Telophase B. Anaphase C. Prophase D. Metaphase

What happens if all the chromosome kinetochores are not attached to spindle fibers? When this occurs, which checkpoint is not passed?

Description : What happens if all the chromosome kinetochores are not attached to spindle fibers? When this occurs, which checkpoint is not passed?

Last Answer : •If the cell does not receive the go-ahead signal, it will exit the cycle, not proceeding onto the S phase

Identify the meiotic stage in which the homologous chromosomes separate while the sister chromatids remain associated at their centromeres. (a) Metaphase I (b) Metaphase II (c) Anaphase I (d) Anaphase I

Description : Identify the meiotic stage in which the homologous chromosomes separate while the sister chromatids remain associated at their centromeres. (a) Metaphase I (b) Metaphase II (c) Anaphase I (d) Anaphase I

Last Answer : (c) Anaphase I

Match the stages of meiosis in column I to their characteristic features in column II and select the correct option using the codes given below. Column I Column II A. Pachytene (i) Pairing of homologous chromosomes B. Metaphase I (ii) Terminalisation of chiasmata C. Diakinesis (iii) Crossing-over takes place D. Zygotene (iv) Chromosomes align at equatorial plate (a) A-(iii), B-(iv), C-(ii), D-(i) (b) A-(i), B-(iv), C-(ii), D-(iii) (c) A-(ii), B-(iv), C-(iii), D-(i) (d) A-(iv), B-(iii), C-(ii), D-(i)

Description : Match the stages of meiosis in column I to their characteristic features in column II and select the correct option using the codes given below. Column I Column II A. Pachytene (i) Pairing of homologous chromosomes B. Metaphase I (ii) ... , C-(iii), D-(i) (d) A-(iv), B-(iii), C-(ii), D-(i)

Last Answer : (a) A-(iii), B-(iv), C-(ii), D-(i)

What is the difference between a prophase and a metaphase?

Description : What is the difference between a prophase and a metaphase?

Last Answer : A: Prophase is the first stage of mitosis, during which the chromatin condenses into visible chromosomes, while metaphase is the stage during which the chromosomes align along the center of the cell.

What is the main event of metaphase? -Biology

Description : What is the main event of metaphase? -Biology

Last Answer : answer:

What is the function of metaphase plate? -Biology

Description : What is the function of metaphase plate? -Biology

Last Answer : answer:

What happens to the chromosomes during metaphase? -Biology

Description : What happens to the chromosomes during metaphase? -Biology

Last Answer : answer:

$ Colchicine is a chemical which can arrest cell division at metaphase ! Colchicine is also called mitotic tympanic cavity of the ear.

Description : $ Colchicine is a chemical which can arrest cell division at metaphase ! Colchicine is also called mitotic tympanic cavity of the ear.

Last Answer : $ Colchicine is a chemical which can arrest cell division at metaphase ! Colchicine is also called mitotic ... D. If both As and R are wrong.

Assertion :- Morphology of chromosomes is most studied during metaphase of cell division. Reason :- Complete disintegration of nuclear envelope marks

Description : Assertion :- Morphology of chromosomes is most studied during metaphase of cell division. Reason :- Complete disintegration of nuclear envelope marks

Last Answer : Assertion :- Morphology of chromosomes is most studied during metaphase of cell division. Reason :- ... D. If both Assertion & Reason are false.

The number of chromosome groups at the equatorial plate in metaphase-I of meiosis in a plant with 2n=50 shall be

Description : The number of chromosome groups at the equatorial plate in metaphase-I of meiosis in a plant with 2n=50 shall be

Last Answer : The number of chromosome groups at the equatorial plate in metaphase-I of meiosis in a plant with 2n=50 shall be A. 50 B. 100 C. 75 D. 25

A cell has 46 chromosomes at each pole in mitotic telophase. In tis division the number of chromatids at the metaphase was :-

Description : A cell has 46 chromosomes at each pole in mitotic telophase. In tis division the number of chromatids at the metaphase was :-

Last Answer : A cell has 46 chromosomes at each pole in mitotic telophase. In tis division the number of chromatids at the metaphase was :- A. 23 B. 46 C. 92 D. 69

If n=16 in plant cell, then how many bivalents in metaphase-I of meiosis are possible ?

Description : If n=16 in plant cell, then how many bivalents in metaphase-I of meiosis are possible ?

Last Answer : If n=16 in plant cell, then how many bivalents in metaphase-I of meiosis are possible ? A. 32 ... B. 16 Telravalents C. 16 Bivalents D. 32 Bivalents

If the number of bivalents are 8 in metaphase - I, what shall be the number of chromosomes in daughter cells after meiosis -I and meiosis -II respecti

Description : If the number of bivalents are 8 in metaphase - I, what shall be the number of chromosomes in daughter cells after meiosis -I and meiosis -II respecti

Last Answer : If the number of bivalents are 8 in metaphase - I, what shall be the number of chromosomes in daughter cells after ... 4 and 4 C. 8 and 8 D. 16 and 8

The two chromatids of a metaphase chromosome represent

Description : The two chromatids of a metaphase chromosome represent

Last Answer : The two chromatids of a metaphase chromosome represent A. replicated DNA to be separated ... and paternal chromosomes joined at the centromere

What is missing from the cell in metaphase?

Description : What is missing from the cell in metaphase?

Last Answer : Need answer

How long does metaphase last?

Description : How long does metaphase last?

Last Answer : What is the answer ?

What star shaped structure radiates from each centriole during metaphase?

Description : What star shaped structure radiates from each centriole during metaphase?

Last Answer : Need answer

In meios-I, the Centro mere undergoes: (a) Division between anaphase and Interphase (b) Division between prophase and metaphase (c) Division but the daughter chromosomes do not separate (d) No division

Description : In meios-I, the Centro mere undergoes: (a) Division between anaphase and Interphase (b) Division between prophase and metaphase (c) Division but the daughter chromosomes do not separate (d) No division

Last Answer : Ans. ((d))

Azides and cyanide inhibit: (a) Metaphase (b) Prophase (c) Anaphase (d) Telophase

Description : Azides and cyanide inhibit: (a) Metaphase (b) Prophase (c) Anaphase (d) Telophase

Last Answer : Ans. ((b))

Which of the following is not a correct combination? (a) Prophase, metaphase, anaphase, telophase (b) Leptonema, zygonema, pachynema, diplonema (c) Diplonema, anaphase I, telophase I, mitosis (d) Prophase II, metaphase II, anaphase II, telophase II

Description : Which of the following is not a correct combination? (a) Prophase, metaphase, anaphase, telophase (b) Leptonema, zygonema, pachynema, diplonema (c) Diplonema, anaphase I, telophase I, mitosis (d) Prophase II, metaphase II, anaphase II, telophase II

Last Answer : Ans:(c)

A cell cycle consists of (a) Mitosis and meiosis (b) GI, the Sphase, and G2 (c) Prophase, metaphase, anaphase and telophase (d) Interphase and mitosis

Description : A cell cycle consists of (a) Mitosis and meiosis (b) GI, the Sphase, and G2 (c) Prophase, metaphase, anaphase and telophase (d) Interphase and mitosis

Last Answer : Ans:(d)

Morphology of Chromosomes can be best studied at - (1) Interphase (2) Prophase (3) Metaphase (4) Zygotene

Description : Morphology of Chromosomes can be best studied at - (1) Interphase (2) Prophase (3) Metaphase (4) Zygotene

Last Answer : (3) Metaphase Explanation: The morphology of the chromosomes can be distinctly studied at metaphase stage of cell division because at this stage chromosomes are in highly condensed ... constriction (centromere), Secondary constriction (nucleolar organizer), satellite, telomere, and chromosmere.

The division of cytoplasm is called a. Telophase b. Metaphase c. Cytokinesis d. None of them

Description : The division of cytoplasm is called a. Telophase b. Metaphase c. Cytokinesis d. None of them

Last Answer : Cytokinesis

. The stage in which each centromere divides is called a. Prophase b. Metaphase c. anaphase d. telophase

Description : . The stage in which each centromere divides is called a. Prophase b. Metaphase c. anaphase d. telophase

Last Answer : anaphase

The period of cell division when the nuclear envelop and nucleolus totally disappear is called a. Prophase b. Metaphase c. anaphase d. telophase

Description : The period of cell division when the nuclear envelop and nucleolus totally disappear is called a. Prophase b. Metaphase c. anaphase d. telophase

Last Answer : Metaphase

The chromatids become visible in a. interphase b. prophase c. anaphase d. metaphase

Description : The chromatids become visible in a. interphase b. prophase c. anaphase d. metaphase

Last Answer : prophase

The period between active cell divisions in called a. anaphase b. metaphase c. interphase d. telephase

Description : The period between active cell divisions in called a. anaphase b. metaphase c. interphase d. telephase

Last Answer : interphase

Segregation of Mendelian factors (no linkage, no crossing over) occurs during (a) anaphase I (b) anaphase II (c) diplotene (d) metaphase I.

Description : Segregation of Mendelian factors (no linkage, no crossing over) occurs during (a) anaphase I (b) anaphase II (c) diplotene (d) metaphase I.

Last Answer : a) anaphase I

Number of chromatids at metaphase is (a) two each in mitosis and meiosis (b) two in mitosis and one in meiosis (c) two in mitosis and four in meiosis (d) one in mitosis and two in meiosis.

Description : Number of chromatids at metaphase is (a) two each in mitosis and meiosis (b) two in mitosis and one in meiosis (c) two in mitosis and four in meiosis (d) one in mitosis and two in meiosis.

Last Answer : (a) two each in mitosis and meiosis