Crossing over takes place between which chromatids and in which stage of the cell cycle ? (a) Non-sister chromatids of non-homologous chromosomes at Zygotene stage of prophase I. (b) Non-sister chromatids of homologous chromosomes at Pachytene stage of prophase I. (c) Non-sister chromatids of homologous chromosomes at Zygotene stage of prophase I. (d) Non-sister chromatids of non-homologous chromosomes at Pachytene stage of prophase I.

Crossing over takes place between which chromatids
and in which stage of the cell cycle ?
(a) Non-sister chromatids of non-homologous
chromosomes at Zygotene stage of prophase I.
(b) Non-sister chromatids of homologous
chromosomes at Pachytene stage of prophase I.
(c) Non-sister chromatids of homologous
chromosomes at Zygotene stage of prophase I.
(d) Non-sister chromatids of non-homologous
chromosomes at Pachytene stage of prophase I.
by

1 Answer

Answer :

(b) Non-sister chromatids of homologous
chromosomes at Pachytene stage of prophase I.
by

Related questions

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)

Select the correct option. Column I Column II A. Synapsis aligns (i) Anaphase II homologous chromosomes B. Synthesis of (ii) Zygotene RNA and protein C. Action of enzyme (iii)G2-phase recombinase D. Centromeres do (iv) Anaphase I not separate but chromatids move towards opposite poles (v) Pachytene (a) A-(i), B-(ii), C-(v), D-(iv) (b) A-(ii), B-(iii), C-(iv), D-(v) (c) A-(ii), B-(i), C-(iii), D-(iv) (d) A-(ii), B-(iii), C-(v), D-(iv)

Description : Select the correct option. Column I Column II A. Synapsis aligns (i) Anaphase II homologous chromosomes B. Synthesis of (ii) Zygotene RNA and protein C. Action of enzyme (iii)G2-phase recombinase D. Centromeres do (iv) Anaphase I not ... ), C-(iii), D-(iv) (d) A-(ii), B-(iii), C-(v), D-(iv)

Last Answer : (d) A-(ii), B-(iii), C-(v), D-(iv)

The stage during which separation of the paired homologous chromosomes begins is (a) pachytene (b) diplotene (c) diakinesis (d) zygotene.

Description : The stage during which separation of the paired homologous chromosomes begins is (a) pachytene (b) diplotene (c) diakinesis (d) zygotene.

Last Answer : (b) diplotene

The stage during which separation of the paired homologous chromosomes begins is (1) Pachytene (2) Diplotene (3) Diakinesis (4) Zygotene

Description : The stage during which separation of the paired homologous chromosomes begins is (1) Pachytene (2) Diplotene (3) Diakinesis (4) Zygotene

Last Answer : (2) Diplotene

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.

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

Assertion : Crossing over take place during pachytene stage. Reason : It is a process of interchange of chromatid material between non sister chromati

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Last Answer : Assertion : Crossing over take place during pachytene stage. Reason : It is a process of interchange of ... D. If both Assertion & Reason are false.

Exchange of chromatin between non-sister chromatids of homologous chromosomes is known as

Description : Exchange of chromatin between non-sister chromatids of homologous chromosomes is known as

Last Answer : Ans. Crossing over

Meiosis I is reductional division. Meiosis II is equational division due to (a) pairing of homologous chromosomes (b) crossing over (c) separation of chromatids (d) disjunction of homologous chromosomes.

Description : Meiosis I is reductional division. Meiosis II is equational division due to (a) pairing of homologous chromosomes (b) crossing over (c) separation of chromatids (d) disjunction of homologous chromosomes.

Last Answer : (c) separation of chromatids

In meiosis crossing over is initiated at (a) zygotene (b) diplotene (c) pachytene (d) leptotene.

Description : In meiosis crossing over is initiated at (a) zygotene (b) diplotene (c) pachytene (d) leptotene.

Last Answer : (c) (ii), (i), (iv), (iii)

Match the following with respect to meiosis. (A) Zygotene (i) Terminalization (B) Pachytene (ii) Chiasmata (C) Diplotene (iii)Crossing over (D) Diakinesis (iv) Synapsis

Description : Match the following with respect to meiosis. (A) Zygotene (i) Terminalization (B) Pachytene (ii) Chiasmata (C) Diplotene (iii)Crossing over (D) Diakinesis (iv) Synapsis

Last Answer : (b) (iv) (iii) (ii) (i)

Crossing-over occurs during (1) Leptotene (2) Zygotene (3) Pachytene (4) Diplotene

Description : Crossing-over occurs during (1) Leptotene (2) Zygotene (3) Pachytene (4) Diplotene

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Homologous chromosomes versus sister chromatids. -Biology

Description : Homologous chromosomes versus sister chromatids. -Biology

Last Answer : answer:

Identify the meiotic sage in which the homologous chromosomes separate while the sister chromatids remain associated at their centrometres. Or In whic

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What paired set of homologous chromosomes each composed of two sister chromatids?

Description : What paired set of homologous chromosomes each composed of two sister chromatids?

Last Answer : What is the answer ?

What and the difference between homologous chromosomes and sister chromatids?

Description : What and the difference between homologous chromosomes and sister chromatids?

Last Answer : Homologous chromosomes is a pair made of a paternal and maternalchromosomes. But sister chromatid is either pairs of paternal ormaternal chromosomes

During meiosis I, the chromosomes start pairing at (a) zygotene (b) pachytene (c) diplotene (d) leptotene.

Description : During meiosis I, the chromosomes start pairing at (a) zygotene (b) pachytene (c) diplotene (d) leptotene.

Last Answer : (a) zygotene

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.

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

Match the columns-I with column-II and select the correct answer :- `{:(" Column-I"," Column-II"),("(A)Pachytene","(i)Bouqute stage"),("(B)Zygotene","

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The enzyme recombinase is required at which stage of meiosis? (a) Pachytene (b) Zygotene (c) Diplotene (d) Diakinesis

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

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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.

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

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Last Answer : Metaphase

Synapsis and crossing over of chromosomes occurs i which phases of meiosis? a) Interphase b) Prophase c) Meterphase d) Teleophase

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Last Answer : ANSWER: B -- PROPHASE

Multiple alleles are present (a) at the same locus of the chromosome (b) on non-sister chromatids (c) on different chromosomes (d) at different loci on the same chromosome

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Meiosis II performs (a) separation of sex chromosomes (b) synthesis of DNA and centromere (c) separation of homologous chromosomes (d) separation of chromatids.

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Last Answer : d) separation of chromatids.

Segregation of Mendelian factor (Aa) occurs during (a) diplotene (b) anaphase I (c) zygotene/pachytene (d) anaphase II.

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Dissolution of the synaptonemal complex occurs during (a) pachytene (b) zygotene (c) diplotene (d) leptotene

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What stage does sister chromatids are separated to opposite poles of the cell?

Description : What stage does sister chromatids are separated to opposite poles of the cell?

Last Answer : Need answer

In which type of cell divisions does crossing over of chromosomes takes place? -Do You Know?

Description : In which type of cell divisions does crossing over of chromosomes takes place? -Do You Know?

Last Answer : answer:

In which type of cell divisions does crossing over of chromosomes takes place?

Description : In which type of cell divisions does crossing over of chromosomes takes place?

Last Answer : Meiosis

Assertion :- Zygotene is charactersed by formation of synaptonemal complex . Reason :- Synoptonemal complex helps in synapsis of non homologous chromo

Description : Assertion :- Zygotene is charactersed by formation of synaptonemal complex . Reason :- Synoptonemal complex helps in synapsis of non homologous chromo

Last Answer : Assertion :- Zygotene is charactersed by formation of synaptonemal complex . Reason :- Synoptonemal complex ... If both Assertion & Reason are false.

A cell examined during prophase of cell cycle contained 100 units of DNA and 50 chromosomes. What would be the number of DNA and chromosome in anaphas

Description : A cell examined during prophase of cell cycle contained 100 units of DNA and 50 chromosomes. What would be the number of DNA and chromosome in anaphas

Last Answer : A cell examined during prophase of cell cycle contained 100 units of DNA and 50 chromosomes. What ... & 100 chromosomes D. 50 DNA & 25 chromosomes

In a somatic cell cycle, DNA synthesis takes place in (a) G1 phase (b) prophase of mitosis (c) S-phase (d) G2 phase.

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Which of the following represents the best stage to view the shape, size and number of chromosomes? (a) Prophase (b) Metaphase (c) Interphase (d) Telophase

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What stage are there homologous chromosomes lined up down the middle of the cell?

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Last Answer : Metaphase 1

In which stage of mitosis, the chromosomes are composed of two chromatids ?

Description : In which stage of mitosis, the chromosomes are composed of two chromatids ?

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At what stage of the cell cycle are histone proteins synthesized in a eukaryotic cell? (a) During G2 stage of prophase (b) During S-phase (c) During entire prophase (d) During telophase

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

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Crossing-over occurs during (1) Leptotene (2) Zygotene (3) Path ene (4) Diplotene

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Last Answer : (3) Path ene Explanation: Chromosomal crossover (or crossing over) is the exchange of genetic material between homologous chromosomes that results in recombinant chromosomes. It is one of the ... recombination, which occurs during prophase I of meiosis (pachytene) during a process called synapsis.

In which stage of meiosis do homologous chromosomes separate?

Description : In which stage of meiosis do homologous chromosomes separate?

Last Answer : Need answer

In which stage, crossing over takes place?

Description : In which stage, crossing over takes place?

Last Answer : Ans. Pachytene stage

In prophase I of meiosis crossing over results in?

Description : In prophase I of meiosis crossing over results in?

Last Answer : Genetic Recombination

Independent assortment of genes does not take place when (a) genes are located on homologous chromosomes (b) genes are linked and located on same chromosome (c) genes are located on non-homogenous chromosome (d) all of these.

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Last Answer : genes are linked and located on same chromosome

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 ?

At the beginning of which phase of mitosis does each duplicated and condensed chromosome consisting of two identical sister chromatids align along the cell equator?

Description : At the beginning of which phase of mitosis does each duplicated and condensed chromosome consisting of two identical sister chromatids align along the cell equator?

Last Answer : Metaphase

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 :-

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Down’s syndrome is due to (a) crossing over (b) linkage (c) sex-linked inheritance (d) non-disjunction of chromosomes.

Description : Down’s syndrome is due to (a) crossing over (b) linkage (c) sex-linked inheritance (d) non-disjunction of chromosomes.

Last Answer : (d) non-disjunction of chromosomes.

.In salivary gland chromosomes/polytene chromosomes, pairing is (a) absent (b) occasional (c) formed between non-homologous chromosomes (d) formed between homologous chromosomes.

Description : .In salivary gland chromosomes/polytene chromosomes, pairing is (a) absent (b) occasional (c) formed between non-homologous chromosomes (d) formed between homologous chromosomes.

Last Answer : (d) formed between homologous chromosomes.

The given figure is the representation of a certain event at a particular stage of a type of cell division. Which is this stage? (a) Prophase I during meiosis (b) Prophase II during meiosis (c) Prophase of mitosis (d) Both prophase and metaphase of mitosis

Description : The given figure is the representation of a certain event at a particular stage of a type of cell division. Which is this stage? (a) Prophase I during meiosis (b) Prophase II during meiosis (c) Prophase of mitosis (d) Both prophase and metaphase of mitosis

Last Answer : (a) Prophase I during meiosis

What happens to the chromosomes during prophase? -Biology

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

Last Answer : answer: