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What is telocentric chromosome?
A telocentric chromosome is a type of chromosome with the centromere located at one end, resulting in a single chromosomal arm. This structure is commonly found in certain species and can affect the genetic behavior during cell division and meiosis.
One of the two homologous strands of a chromosome?
A homologous strand of a chromosome is a duplicated copy of the original chromosome, formed during DNA replication. It contains the same genetic information as the original chromosome and is held together by a centromere. Homologous chromosomes play a key role in meiosis, where they pair up and exchange genetic material during crossing over.
During what phase of meiosis does the DNA coil into visible chromosomes?
During prophase I of meiosis, the DNA condenses and coils into visible chromosomes. Each chromosome consists of two sister chromatids joined at the centromere. This phase is crucial for the pairing of homologous chromosomes and the exchange of genetic material through recombination.
Which phase of mitosis does the centromere divide chromatids split and identical chromosome move to opposite ends of the cell?
metaphase I of meiosis
Is chromosome Y an acrocentric chromosome?
A chromosome is determined to be metacentric, acrocentric or telocentric by the location of its centromere. Centromeres are the point of attachment of two sister chromatids. Sister chromatids are formed during DNA replication prior to mitosis or meiosis. Chromosome Y by itself (when it is not replicating and there are no sister chromatids) is not acrocentric, as it wouldn't even have a centromere location.
What is the function of centromere?
The centromere is a region of a chromosome that helps in the process of cell division. It plays a crucial role in ensuring that each daughter cell receives the correct amount of genetic material. The centromere also serves as the attachment point for spindle fibers during mitosis and meiosis.
What is telocentric chromosome?
A telocentric chromosome is a type of chromosome with the centromere located at one end, resulting in a single chromosomal arm. This structure is commonly found in certain species and can affect the genetic behavior during cell division and meiosis.
What is the region of a chromosome where two sister chromatids attach?
The region of a chromosome where two sister chromatids attach is called the centromere. It appears as a constricted area on the chromosome, serving as a site for protein binding and attachment of spindle fibers during cell division. The centromere plays a crucial role in ensuring proper segregation of chromosomes during mitosis and meiosis.
One of the two homologous strands of a chromosome?
A homologous strand of a chromosome is a duplicated copy of the original chromosome, formed during DNA replication. It contains the same genetic information as the original chromosome and is held together by a centromere. Homologous chromosomes play a key role in meiosis, where they pair up and exchange genetic material during crossing over.
During what phase of meiosis does the DNA coil into visible chromosomes?
During prophase I of meiosis, the DNA condenses and coils into visible chromosomes. Each chromosome consists of two sister chromatids joined at the centromere. This phase is crucial for the pairing of homologous chromosomes and the exchange of genetic material through recombination.
What is cetromere?
The centromere is a region of a chromosome that plays a critical role in cell division. It is responsible for ensuring proper segregation of chromosomes during mitosis and meiosis. The centromere serves as the attachment site for spindle fibers that help pull apart sister chromatids.
Which phase of mitosis does the centromere divide chromatids split and identical chromosome move to opposite ends of the cell?
metaphase I of meiosis
What is the role of a centromere in biology?
The centromere is a specialized region on a chromosome that helps to ensure proper cell division by organizing and attaching to spindle fibers during mitosis and meiosis. It plays a crucial role in the segregation of chromosomes to daughter cells.
Is chromosome Y an acrocentric chromosome?
A chromosome is determined to be metacentric, acrocentric or telocentric by the location of its centromere. Centromeres are the point of attachment of two sister chromatids. Sister chromatids are formed during DNA replication prior to mitosis or meiosis. Chromosome Y by itself (when it is not replicating and there are no sister chromatids) is not acrocentric, as it wouldn't even have a centromere location.
What is the site on the chromosome where micro tubules attach during cell division?
The site on the chromosome where microtubules attach during cell division is called the centromere. This region is crucial for the proper segregation of chromosomes during mitosis and meiosis, as it facilitates the binding of spindle fibers to the chromosomes. The centromere helps ensure that each daughter cell receives the correct number of chromosomes.
What is the difference between a chromatid and a centromere?
The centromere is the region of the chromosome that holds the two sister chromatids together during mitosis. The chromatid is one of the two strands of chromosomes that become visible during mitosis or meiosis.
In which stage of meiosis is the chromosome number halved?
The chromosome number is halved during the first stage of meiosis, known as meiosis I.
