What is the exchange of genetic material between sister chromatids?
What is the exchange of genetic material between sister chromatids?
Sister chromatid exchange (SCE) is the exchange of genetic material between two identical sister chromatids.
Which of the following lists the correct sequence of mitotic events?
Mitosis follows the following sequence: prophase, metaphase, anaphase, telophase, cytokinesis.
Does recombination occur between sister chromatids?
Mitotic homologous recombination occurs mainly between sister chromatids subsequent to replication (but prior to cell division). Inter-sister homologous recombination is ordinarily genetically silent.
What is the difference between sister and non-sister chromatids?
Sister chromatids have the same genes and the same alleles. Non-sister chromatids are also called as homologues. They are chromosome pairs having the same length, staining pattern, centromere position as well as the same characteristics of genes at particular loci.
How does the exchange of genetic material occur between chromosomes?
When recombination occurs during meiosis, the cell’s homologous chromosomes line up extremely close to one another. Then, the DNA strand within each chromosome breaks in the exact same location, leaving two free ends. Each end then crosses over into the other chromosome and forms a connection called a chiasma.
What is the process where maternal and paternal chromosomes exchange genetic material?
Crossovers result in recombination and the exchange of genetic material between the maternal and paternal chromosomes. As a result, offspring can have different combinations of genes than their parents.
What is it called when crossing over occurs?
During meiosis, an event known as chromosomal crossing over sometimes occurs as a part of recombination. In this process, a region of one chromosome is exchanged for a region of another chromosome, thereby producing unique chromosomal combinations that further divide into haploid daughter cells.