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Is meisos carried out in all tissues that require cell replacement?
Mitosis occurs to replace tissue cells. Meiosis is cell division for the production of gametes.
Which divides many times to form a blastula?
A zygote divides repeatedly through the process of cleavage to form a blastula. Cleavage involves a series of rapid cell divisions without cell growth, resulting in a multicellular structure called a blastula with a hollow, fluid-filled center called a blastocoel.
What are the end products of mitosis and meisos?
The end products of mitosis are two genetically identical daughter cells, each with the same number of chromosomes as the original cell. In contrast, meiosis results in four genetically diverse daughter cells, each with half the number of chromosomes of the original cell, contributing to genetic variation in sexually reproducing organisms.
What are nondisjunction genes?
Nondisjunction is the failure of homologous chromosomes or chromatids to segregate during mitosis or meisos with the result that one daughter cell has both of a pair of parental chromosomes or chromatids and the other has none. An example is Trisomy 21, which is also called Down's Syndrome. This person has 3 chromosome #21.Nondisjunction of genes occur during meiosis I when homologous chromosomes fail to separate or during meiosis II when there is unequal distribution of chromosomes. This leads to aneuploidy.
What is the realationship between chromatin and chromosomes?
Chromatin is a complex of DNA and proteins found in the nucleus of a cell, which condenses into tightly packed structures called chromosomes during cell division. Chromosomes are formed by the coiling and condensation of chromatin fibers. In summary, chromatin is the material that makes up chromosomes.
What does meisos produce?
cells
What produce meisos?
cells
When a cell undergoes meisos what happens to the number of chromosomes?
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Is meisos carried out in all tissues that require cell replacement?
Mitosis occurs to replace tissue cells. Meiosis is cell division for the production of gametes.
What is the main diffrience between mitosis and meioses?
in mitosis a cell divides in 2daughter cell have same num.of chromosome as parent but in meisos one dipliod (pair of chromosome) divides in 4haploid daughter cells (not in pair)
Which divides many times to form a blastula?
A zygote divides repeatedly through the process of cleavage to form a blastula. Cleavage involves a series of rapid cell divisions without cell growth, resulting in a multicellular structure called a blastula with a hollow, fluid-filled center called a blastocoel.
What are the end products of mitosis and meisos?
The end products of mitosis are two genetically identical daughter cells, each with the same number of chromosomes as the original cell. In contrast, meiosis results in four genetically diverse daughter cells, each with half the number of chromosomes of the original cell, contributing to genetic variation in sexually reproducing organisms.
What are nondisjunction genes?
Nondisjunction is the failure of homologous chromosomes or chromatids to segregate during mitosis or meisos with the result that one daughter cell has both of a pair of parental chromosomes or chromatids and the other has none. An example is Trisomy 21, which is also called Down's Syndrome. This person has 3 chromosome #21.Nondisjunction of genes occur during meiosis I when homologous chromosomes fail to separate or during meiosis II when there is unequal distribution of chromosomes. This leads to aneuploidy.
What is the realationship between chromatin and chromosomes?
Chromatin is a complex of DNA and proteins found in the nucleus of a cell, which condenses into tightly packed structures called chromosomes during cell division. Chromosomes are formed by the coiling and condensation of chromatin fibers. In summary, chromatin is the material that makes up chromosomes.
A cell with 24 chromosomes undergoes mitosis twice. How many chromosomes will each daughter cell have?
When you say 24 chromosomes BEGINS mitosis, do you mean after interphase(after DNA is replicated)? If you do mean that, then each daughter cell would have 12 chromosomes, because during interphase, DNA is replicated, and the parent cell splits into two daughter cells, which each of them has 12 chromosomes.
What is the difference between Mitosis and Meosis?
mitosis takes place in somatic cells.it helps in growth,repairing of tissues and cells.it is a single division which produces two daughter cell.it involves five phases -interphase, prophase ,anaphase ,metaphase ,and telophase meosis takes place in sex cells .it helps to produce gametes-ova and sperm. it is a double division which produces four daughter cells. it completes with meosis1 and meosis2 and further prophase is divided into 4 in meosis1.
What the relationship between DNA and chromosomes?
Both chromosomes and chromatin are DNA, however they differentiate slightly. Chromatin is wound up DNA, and chromosomes are what DNA look like when a cell is getting ready to divide. Chromosomes are also symmetrical, and they have the same DNA on each side.
