0
The most common form of synapsis occurs in the nuclei of cells undergoing the type of cell division called meiosis.
It occurs during prophase I (i.e. prophase of the first meiotic division). Prophase I is subdivided into five stages, and synapsis occurs in the second of these (zygotene).
Synapsis refers to the pairing of homologous chromosomes. For example, the chromosome 5 that you inherited from your mother pairs with the chromosome 5 that you inherited from your Dad. By "pairing" is meant the exact alignment of two chromosomes, so that each point (locus) on one chromosome is beside the corresponding point on the other.
It does not only occur during meiosis. Some flies, including the intensively-studied fruit-fly Drosophila, can undergo endomitosis, which is the division of chromosomes without subsequent cytokinesis (splitting of the cytoplasm).
The result? A considerable replication of chromosomal material within a single cell. A famous example is the giant (polytene) chromosomes of the salivary glands of Drosophila. In these giant chromosomes the genetic material is aligned, so this is another example of synapsis.
What else can I help you with?
The two chromosomes in each matching pair in a karyotype are?
The two chromosomes in each matching pair in a karyotype are homologous chromosomes. These homologous chromosomes carry genes for the same traits at the same loci. One chromosome in the pair is inherited from the mother and the other from the father.
The process where replicated homologous chromosomes are linked to form tetrads is called?
Synapsis is the process where replicated homologous chromosomes pair up and form tetrads during meiosis.
What are the homologous chromosomes and where does the an individual receive homologous chromosomes from?
Two chromosomes are homologous if they have the same genes at the same loci (position). In a homologous pair, there is one chromosome from the mother (maternal) and one from the father (paternal).
Is homologous chromosomes only present in cells that undergo meiosis?
Usually they dont as homologous chromosomes form bivalents with other homologous chromosomes and crossing over occurs between the 2. But if a chiasmata does form between the t homologous chromosomes they can change information.
What is a pair of similar chromosomes with the same genes in the same locations?
A pair of similar chromosomes with the same genes in the same locations is known as homologous chromosomes. Homologous chromosomes are inherited from each parent and play a crucial role in genetic variation and inheritance.
How does a tetrad form in prophase I of meiosis?
In prophase I, doubled homologous chromosomes group together to form a tetrad.
What stage in meiosis do homologous chromosomes come together?
During meiosis, the homologous chromosomes come together during prophase I. Pairs of homologous chromosomes align during a process called synapsis and form a tetrad (four sister chromatids, two from each pair of homologous chromosomes). During synapsis, crossing over may occur, during which homologous chromosomes exchange genetic material.
In mitosis or meiosis do doubled chromosomes pair to form tetrads?
In meiosis, doubled chromosomes (homologous pairs) pair to form tetrads during prophase I. This allows for genetic recombination to occur between homologous chromosomes. In mitosis, chromosomes do not pair to form tetrads as there is no crossing over between homologous chromosomes.
Are homologous chromosomes present in both mitosis and meiosis?
Yes, homologous chromosomes are present in both mitosis and meiosis. In mitosis, homologous chromosomes do not pair up, while in meiosis, homologous chromosomes pair up during prophase I.
The two chromosomes in each matching pair in a karyotype are?
The two chromosomes in each matching pair in a karyotype are homologous chromosomes. These homologous chromosomes carry genes for the same traits at the same loci. One chromosome in the pair is inherited from the mother and the other from the father.
What is the name given to a pair of chromosomes that have matching locations for alternate forms of the same gene?
homologous chromosomes
The process where replicated homologous chromosomes are linked to form tetrads is called?
Synapsis is the process where replicated homologous chromosomes pair up and form tetrads during meiosis.
What do homologous chromosomes do in prophase 1?
Homologous chromosomes pair up and undergo a process called synapsis, during which they exchange genetic material in a process called crossing over. This helps create genetic diversity by shuffling genes between homologous chromosomes.
What is another word for matching chromosomes?
Homologous is the word used to describe matching chromosomes, with a homolog being a pair of homologous chromosomes.
What are the homologous chromosomes and where does the an individual receive homologous chromosomes from?
Two chromosomes are homologous if they have the same genes at the same loci (position). In a homologous pair, there is one chromosome from the mother (maternal) and one from the father (paternal).
What is a pair of corresponding chromosomes called?
A pair of corresponding chromosomes is called homologous chromosomes. They are similar in size and carry genes that control the same traits. One chromosome in the pair is inherited from each parent.
How many chromosomes are in a homologous pair?
in a homologous chromosome there are two chromosomes ( a chromosome and a sister chromosome)
