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How are sister chromatids attached to one another at the molecular level during cell division?
Sister chromatids are attached to each other at the molecular level by a protein complex called the cohesin complex. This complex holds the two chromatids together along their length until they are separated during cell division.
What is the term for the two sets of chromatids formed in the parent cell?
Tetrad
What is the relationship between chromosomes and chromatids?
Chromosomes are the condensed and replicated form of DNA. The two identical halves of the chromosomes are known as sister chromatids. Before division, while the chromatids are still attached, they form one chromosome. However, when anaphase (i.e the stage when chromosomes split) starts and they are separated, the two chromatids on the opposite poles of the cell become complete chromosomes.
Do sister chromatids always have the same alleles?
Yes, sister chromatids always have the same alleles because they are exact copies of each other formed during DNA replication in the S phase of the cell cycle.
Each chromosome of a eukaryotic cell consists of a pair of identical structures called?
Each chromosome of a eukaryotic cell consists of a pair of identical structures called sister chromatids, which are joined together at a region called the centromere. Sister chromatids are produced during DNA replication and are separated during cell division to ensure each daughter cell receives a complete set of chromosomes.
When all the genes of a chromosome have duplicated but are still attached the strutures that are formed are called?
When all the genes of a chromosome have duplicated but are still attached, the structures that are formed are called sister chromatids. Sister chromatids are identical copies of each other, and they are held together at a specialized region called the centromere.
How are sister chromatids attached to one another at the molecular level during cell division?
Sister chromatids are attached to each other at the molecular level by a protein complex called the cohesin complex. This complex holds the two chromatids together along their length until they are separated during cell division.
The point at which two chromatids are attached to each other in a chromosome is called?
Centromere!
What is the sides of a chromosome called after they are in the structure?
each side of the chromosome is called a chromatid they are bonded together by the centromere
Which phase are sister chromatids visible and attached to each other at the centromere?
Sister chromatids are visible and attached to each other at the centromere during the prophase and metaphase stages of cell division, specifically in mitosis and meiosis. In prophase, the chromatids condense and become more distinct, while in metaphase, they align at the cell's equatorial plane, still connected at the centromere. This attachment is crucial for their proper segregation into daughter cells during the later stages of cell division.
Why is it pointless for sister chromatids to crossover?
Crossing-over occurs between non-sister chromatids, since (prior to crossing-over) sister chromatids are genetically identical (i.e. one is a duplication of the other). Therefore, if sister chromatids underwent a cross-over, no genetic variation would occur.
Where is the region where the identical DNA molecules are most tightly attached to each other?
Identical DNA molecules are most tightly attached to each other at the region known as the centromere, which is located in the middle of the chromosome. The centromere plays a crucial role in cell division by providing the attachment site for spindle fibers during mitosis and meiosis.
What is the small section of a chromosome where sister chromatids attach to each other?
The small section of a chromosome where sister chromatids attach to each other is called the centromere. It plays a crucial role in ensuring accurate segregation of genetic material during cell division.
What is the term for the two sets of chromatids formed in the parent cell?
Tetrad
What is the difference between a chromatid and a sister chromatid?
Homologous chromosomes is a pair made of a paternal and maternal chromosomes. But sister chromatid is either pairs of paternal or maternal chromosomes
What is the relationship between chromosomes and chromatids?
Chromosomes are the condensed and replicated form of DNA. The two identical halves of the chromosomes are known as sister chromatids. Before division, while the chromatids are still attached, they form one chromosome. However, when anaphase (i.e the stage when chromosomes split) starts and they are separated, the two chromatids on the opposite poles of the cell become complete chromosomes.
How many chromatids does each chromosome have after S-phase?
A chromatid really only exists during the first two stages of mitosis(prophase and metaphase). This is when the DNA has been replicated and the chromosomes essentially is composed of 2 identical segments.
