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Is a threalike materials that coils into chromosomes just before cell division occur it contain DNAProtien and some RNA?
chromatin
Could crossing over occur during second meiotic division?
No, crossing over occurs during the first meiotic division when homologous chromosomes exchange genetic material. In the second meiotic division, the chromatids of each chromosome separate, resulting in the formation of haploid daughter cells.
Could crossing over occur during the second meiotic division?
No, crossing over occurs during prophase I of meiosis when homologous chromosomes exchange genetic material. The second meiotic division involves separating sister chromatids, so crossing over does not occur.
What is a failure of homologous chromosomes to separate in meiosis?
A failure of homologous chromosomes to separate in meiosis is called nondisjunction. This can result in cells with an abnormal number of chromosomes, leading to genetic disorders such as Down syndrome. Nondisjunction can occur during either the first or second division of meiosis.
What would happen to the number of chromosomes in a cell if mitosis occurred but cytokinesis did not take place?
The number of chromosomes in the cell would remain the same. Mitosis involves the division of the nucleus to ensure that each daughter cell receives a full set of chromosomes. Cytokinesis, the division of the cytoplasm, is responsible for separating the two daughter cells. If cytokinesis does not occur, the cell would end up with two nuclei but still have the same number of chromosomes.
Does cell division require energy to occur?
Yes, cell division requires energy to occur. This energy is needed for various processes such as duplicating DNA, separating chromosomes, and forming new cell membranes.
When does the second mitotic division occur in the egg?
The second mitotic division in the egg typically occurs after fertilization by the sperm. This division takes place once the zygote has formed and involves further division of the replicated chromosomes to generate daughter cells with the full complement of chromosomes.
Where does nondisjunction occur in the process of cell division?
Nondisjunction occurs during the separation of chromosomes in either meiosis or mitosis, leading to an abnormal number of chromosomes in the resulting cells.
Is a threalike materials that coils into chromosomes just before cell division occur it contain DNAProtien and some RNA?
chromatin
Could crossing over occur during second meiotic division?
No, crossing over occurs during the first meiotic division when homologous chromosomes exchange genetic material. In the second meiotic division, the chromatids of each chromosome separate, resulting in the formation of haploid daughter cells.
When does duplication of chromosomes occur?
when does the duplication of chromosomes occur?
Can nondisjunction occur during mitosis?
Yes, nondisjunction can occur during mitosis. Nondisjunction is the failure of chromosomes to separate properly during cell division, leading to an abnormal distribution of chromosomes in the daughter cells. This can result in genetic disorders such as Down syndrome.
Could crossing over occur during the second meiotic division?
No, crossing over occurs during prophase I of meiosis when homologous chromosomes exchange genetic material. The second meiotic division involves separating sister chromatids, so crossing over does not occur.
Why must meiosis 2 occur in the process of cell division?
Meiosis 2 is necessary in cell division to further separate the paired chromosomes in the cell, ensuring that each resulting cell has the correct number of chromosomes. This is important for the formation of gametes (sperm and egg cells) with half the normal number of chromosomes, which is essential for sexual reproduction and genetic diversity.
Which does not occur during meiosis?
DNA replication does not occur during meiosis. Meiosis is a specialized cell division process that involves two rounds of division to produce gametes with half the number of chromosomes as the parent cell. DNA replication happens during the interphase preceding meiosis.
What is a failure of homologous chromosomes to separate in meiosis?
A failure of homologous chromosomes to separate in meiosis is called nondisjunction. This can result in cells with an abnormal number of chromosomes, leading to genetic disorders such as Down syndrome. Nondisjunction can occur during either the first or second division of meiosis.
Does order of operations always occur?
yes BIMDAS Brackets Indicies Multiplication Division Adding Subtraction
