Quick Answer: What is the transfer of genes between nonhomologous chromosomes?

In a translocation, a segment from one chromosome is transferred to a nonhomologous chromosome or to a new site on the same chromosome. Translocations place genes in new linkage relationships and generate chromosomes without normal pairing partners.

Which of the following is a transfer of genes between non homologous chromosomes?

The correct answer is (d) translocation. Translocation occurs when a segment of one chromosome is removed and transferred to another chromosome (that…

What is the exchange of genes between chromosomes called?

Chromosomal crossover, or crossing over, is the exchange of genetic material during sexual reproduction between two homologous chromosomes’ non-sister chromatids that results in recombinant chromosomes.

What is Interchromosomal translocation?

Interchromosomal translocations involve the movement of a chromosomal segment(s) between chromosomes. Reciprocal translocations occur when chromosomal segments are exchanged between two non- homologous chromosomes and is the most typical type of translocation.

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What is the genetic relationship between homologous chromosomes?

The two chromosomes in a homologous pair are very similar to one another and have the same size and shape. Most importantly, they carry the same type of genetic information: that is, they have the same genes in the same locations. However, they don’t necessarily have the same versions of genes.

When part of a chromosome is transferred from one chromosome to a nonhomologous chromosome a <UNK> mutation results?

Reciprocal translocations do not involve loss of genetic information: A reciprocal translocation occurs when a segment of DNA is transferred from one chromosome to another, nonhomologous chromosome.

When pieces are exchanged between non homologous chromosomes during meiosis?

Recombination in meiosis. Recombination occurs when two molecules of DNA exchange pieces of their genetic material with each other. One of the most notable examples of recombination takes place during meiosis (specifically, during prophase I), when homologous chromosomes line up in pairs and swap segments of DNA.

What is crossing over and recombination?

Recombination refers to the process of recombining genes to produce new gene combinations that differ from those of either parent. Crossing over is the process of exchanging segments of chromosomes between homologous chromosomes.

What is meiosis crossing over?

Crossing over is the swapping of genetic material that occurs in the germ line. During the formation of egg and sperm cells, also known as meiosis, paired chromosomes from each parent align so that similar DNA sequences from the paired chromosomes cross over one another.

What do we call this type of chromosome that has exchanged genes with its homologue?

Crossover occurs when two chromosomes, normally two homologous instances of the same chromosome, break and then reconnect but to the different end piece. If they break at the same place or locus in the sequence of base pairs, the result is an exchange of genes, called genetic recombination.

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What is insertion in gene mutation?

Insertion. An insertion changes the DNA sequence by adding one or more nucleotides to the gene. As a result, the protein made from the gene may not function properly. Deletion. A deletion changes the DNA sequence by removing at least one nucleotide in a gene.

Which change in chromosome structure involves the transfer of one section of a chromosome to a non homologous chromosome?

A translocation occurs when a segment of a chromosome dissociates and reattaches to a different, nonhomologous chromosome.

What is Intrachromosomal and Interchromosomal translocation reciprocal and non reciprocal translocation?

Translocations can occur within a chromosome (intrachromosomal) or between chromosomes (interchromosomal). In an intrachromosomal translocation, a segment breaks off the chromosome and rejoins it at a different location. … Nonreciprocal translocations occur when the transfer of chromosomal material is one way.

What are homologous and nonhomologous chromosomes?

Homologous chromosomes correspond to the chromosomes present on the same pair in contrast to non-homologous chromosomes where they are found on different pairs.

Why do chromosomes separate into homologous pairs?

Homologous chromosomes are important in the processes of meiosis and mitosis. They allow for the recombination and random segregation of genetic material from the mother and father into new cells.

When are homologous chromosomes separate?

In anaphase I, centromeres break down and homologous chromosomes separate. In telophase I, chromosomes move to opposite poles; during cytokinesis the cell separates into two haploid cells.