NEET Test Series from KOTA - 10 Papers In MS WORD
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Cell cycle and Cell Division
230932
Crossing over takes place between which chromatids and in which stage of the cell cycle?
1 Non-sister chromatids of non-homologous chromosomes at Pachytene stage of prophase I
2 Non-sister chromatids of non-homologous chromosomes at Zygotene stage of prophase I
3 Non-sister chromatids of homologous chromosomes at Pachytene stage of prophase I
4 Non-sister chromatids of homologous chromosomes at Zygotene stage of prophase I
Explanation:
: Scheme to illustrate double crossing over - Crossing over takes place between non-sister chromatids of homologous chromosomes at the pachytene stage of prophase. I. During prophase I of meiosis, the homologous chromosomes pair up and form a structure called a bivalent.
[NEET (Odisha)-2019]
Cell cycle and Cell Division
230942
Indentify the correct matched pair.
1 Segregation-Metaphase II
2 Significance of meiosis-Production genetically similar cells
3 Exchange of genetic material-Diakinesis
4 Anaphase II of meiosis-Centromeric division
Explanation:
D In anaphase II of meiotic division, the centromeres divide. This division results in the movement of two separated chromatids of chromosomes towards opposite poles. Anaphase-II involves separation of the sister chromatids. Meiosis II - Stages Prophase || Metaphase || Anaphase || lebphase ||
[AIIMS-201]
Cell cycle and Cell Division
230943
Anaphase promoting complex (APC) is a protein degradation machinery necessary for proper mitosis of animal cells. If APC is defective in a human cell, which of the following is expected to occur?
1 Chromosomes will not condense
2 Chromosomes will be fragmented
3 Chromosomes will not segregate
4 Recombination of chromosome arms will occur
Explanation:
C The APC is a protein degradation machinery that is necessary for proper mitosis of animal cells. It degrades proteins that are involved in mitosis, such as cyclins and securing. It the APC is defective, then these proteins will not be able to proceed properly and the chromosomes will not segregate properly. This can lead to a number of problems, including- - Cell death. - Chromosomal abnormalities. - Cancer.
[NEET-2017]
Cell cycle and Cell Division
230952
Which of the following characters is related with telophase?
1 Formation of nuclear membrane
2 Formation of nucleolus
3 Elongation of chromosome
4 Formation of two daughter nuclei cytokinasis
Explanation:
A The process of mitosis which divides the duplicated genetic material carried in the nucleus of a parent cell into two identical daughter cells is called telophase. - To isolated the nuclear DNA from the cytoplasm a nuclear membrane develops around each set of chromosomes during telophase. - Telophase is the final stage of both meiosis and mitosis. - The consequences of prophase and prometaphase (disintegration of the nucleous and nuclar membrane) are reversed during telophase. - As chromosomes reach the cells poles, a nuclear envelope form around, nucleoli resurface and chromosomes begin to decondense back into the extended chromatin of interphase.
230932
Crossing over takes place between which chromatids and in which stage of the cell cycle?
1 Non-sister chromatids of non-homologous chromosomes at Pachytene stage of prophase I
2 Non-sister chromatids of non-homologous chromosomes at Zygotene stage of prophase I
3 Non-sister chromatids of homologous chromosomes at Pachytene stage of prophase I
4 Non-sister chromatids of homologous chromosomes at Zygotene stage of prophase I
Explanation:
: Scheme to illustrate double crossing over - Crossing over takes place between non-sister chromatids of homologous chromosomes at the pachytene stage of prophase. I. During prophase I of meiosis, the homologous chromosomes pair up and form a structure called a bivalent.
[NEET (Odisha)-2019]
Cell cycle and Cell Division
230942
Indentify the correct matched pair.
1 Segregation-Metaphase II
2 Significance of meiosis-Production genetically similar cells
3 Exchange of genetic material-Diakinesis
4 Anaphase II of meiosis-Centromeric division
Explanation:
D In anaphase II of meiotic division, the centromeres divide. This division results in the movement of two separated chromatids of chromosomes towards opposite poles. Anaphase-II involves separation of the sister chromatids. Meiosis II - Stages Prophase || Metaphase || Anaphase || lebphase ||
[AIIMS-201]
Cell cycle and Cell Division
230943
Anaphase promoting complex (APC) is a protein degradation machinery necessary for proper mitosis of animal cells. If APC is defective in a human cell, which of the following is expected to occur?
1 Chromosomes will not condense
2 Chromosomes will be fragmented
3 Chromosomes will not segregate
4 Recombination of chromosome arms will occur
Explanation:
C The APC is a protein degradation machinery that is necessary for proper mitosis of animal cells. It degrades proteins that are involved in mitosis, such as cyclins and securing. It the APC is defective, then these proteins will not be able to proceed properly and the chromosomes will not segregate properly. This can lead to a number of problems, including- - Cell death. - Chromosomal abnormalities. - Cancer.
[NEET-2017]
Cell cycle and Cell Division
230952
Which of the following characters is related with telophase?
1 Formation of nuclear membrane
2 Formation of nucleolus
3 Elongation of chromosome
4 Formation of two daughter nuclei cytokinasis
Explanation:
A The process of mitosis which divides the duplicated genetic material carried in the nucleus of a parent cell into two identical daughter cells is called telophase. - To isolated the nuclear DNA from the cytoplasm a nuclear membrane develops around each set of chromosomes during telophase. - Telophase is the final stage of both meiosis and mitosis. - The consequences of prophase and prometaphase (disintegration of the nucleous and nuclar membrane) are reversed during telophase. - As chromosomes reach the cells poles, a nuclear envelope form around, nucleoli resurface and chromosomes begin to decondense back into the extended chromatin of interphase.
230932
Crossing over takes place between which chromatids and in which stage of the cell cycle?
1 Non-sister chromatids of non-homologous chromosomes at Pachytene stage of prophase I
2 Non-sister chromatids of non-homologous chromosomes at Zygotene stage of prophase I
3 Non-sister chromatids of homologous chromosomes at Pachytene stage of prophase I
4 Non-sister chromatids of homologous chromosomes at Zygotene stage of prophase I
Explanation:
: Scheme to illustrate double crossing over - Crossing over takes place between non-sister chromatids of homologous chromosomes at the pachytene stage of prophase. I. During prophase I of meiosis, the homologous chromosomes pair up and form a structure called a bivalent.
[NEET (Odisha)-2019]
Cell cycle and Cell Division
230942
Indentify the correct matched pair.
1 Segregation-Metaphase II
2 Significance of meiosis-Production genetically similar cells
3 Exchange of genetic material-Diakinesis
4 Anaphase II of meiosis-Centromeric division
Explanation:
D In anaphase II of meiotic division, the centromeres divide. This division results in the movement of two separated chromatids of chromosomes towards opposite poles. Anaphase-II involves separation of the sister chromatids. Meiosis II - Stages Prophase || Metaphase || Anaphase || lebphase ||
[AIIMS-201]
Cell cycle and Cell Division
230943
Anaphase promoting complex (APC) is a protein degradation machinery necessary for proper mitosis of animal cells. If APC is defective in a human cell, which of the following is expected to occur?
1 Chromosomes will not condense
2 Chromosomes will be fragmented
3 Chromosomes will not segregate
4 Recombination of chromosome arms will occur
Explanation:
C The APC is a protein degradation machinery that is necessary for proper mitosis of animal cells. It degrades proteins that are involved in mitosis, such as cyclins and securing. It the APC is defective, then these proteins will not be able to proceed properly and the chromosomes will not segregate properly. This can lead to a number of problems, including- - Cell death. - Chromosomal abnormalities. - Cancer.
[NEET-2017]
Cell cycle and Cell Division
230952
Which of the following characters is related with telophase?
1 Formation of nuclear membrane
2 Formation of nucleolus
3 Elongation of chromosome
4 Formation of two daughter nuclei cytokinasis
Explanation:
A The process of mitosis which divides the duplicated genetic material carried in the nucleus of a parent cell into two identical daughter cells is called telophase. - To isolated the nuclear DNA from the cytoplasm a nuclear membrane develops around each set of chromosomes during telophase. - Telophase is the final stage of both meiosis and mitosis. - The consequences of prophase and prometaphase (disintegration of the nucleous and nuclar membrane) are reversed during telophase. - As chromosomes reach the cells poles, a nuclear envelope form around, nucleoli resurface and chromosomes begin to decondense back into the extended chromatin of interphase.
NEET Test Series from KOTA - 10 Papers In MS WORD
WhatsApp Here
Cell cycle and Cell Division
230932
Crossing over takes place between which chromatids and in which stage of the cell cycle?
1 Non-sister chromatids of non-homologous chromosomes at Pachytene stage of prophase I
2 Non-sister chromatids of non-homologous chromosomes at Zygotene stage of prophase I
3 Non-sister chromatids of homologous chromosomes at Pachytene stage of prophase I
4 Non-sister chromatids of homologous chromosomes at Zygotene stage of prophase I
Explanation:
: Scheme to illustrate double crossing over - Crossing over takes place between non-sister chromatids of homologous chromosomes at the pachytene stage of prophase. I. During prophase I of meiosis, the homologous chromosomes pair up and form a structure called a bivalent.
[NEET (Odisha)-2019]
Cell cycle and Cell Division
230942
Indentify the correct matched pair.
1 Segregation-Metaphase II
2 Significance of meiosis-Production genetically similar cells
3 Exchange of genetic material-Diakinesis
4 Anaphase II of meiosis-Centromeric division
Explanation:
D In anaphase II of meiotic division, the centromeres divide. This division results in the movement of two separated chromatids of chromosomes towards opposite poles. Anaphase-II involves separation of the sister chromatids. Meiosis II - Stages Prophase || Metaphase || Anaphase || lebphase ||
[AIIMS-201]
Cell cycle and Cell Division
230943
Anaphase promoting complex (APC) is a protein degradation machinery necessary for proper mitosis of animal cells. If APC is defective in a human cell, which of the following is expected to occur?
1 Chromosomes will not condense
2 Chromosomes will be fragmented
3 Chromosomes will not segregate
4 Recombination of chromosome arms will occur
Explanation:
C The APC is a protein degradation machinery that is necessary for proper mitosis of animal cells. It degrades proteins that are involved in mitosis, such as cyclins and securing. It the APC is defective, then these proteins will not be able to proceed properly and the chromosomes will not segregate properly. This can lead to a number of problems, including- - Cell death. - Chromosomal abnormalities. - Cancer.
[NEET-2017]
Cell cycle and Cell Division
230952
Which of the following characters is related with telophase?
1 Formation of nuclear membrane
2 Formation of nucleolus
3 Elongation of chromosome
4 Formation of two daughter nuclei cytokinasis
Explanation:
A The process of mitosis which divides the duplicated genetic material carried in the nucleus of a parent cell into two identical daughter cells is called telophase. - To isolated the nuclear DNA from the cytoplasm a nuclear membrane develops around each set of chromosomes during telophase. - Telophase is the final stage of both meiosis and mitosis. - The consequences of prophase and prometaphase (disintegration of the nucleous and nuclar membrane) are reversed during telophase. - As chromosomes reach the cells poles, a nuclear envelope form around, nucleoli resurface and chromosomes begin to decondense back into the extended chromatin of interphase.
