Genetics Fundamentals – Lesson 5: Meiosis
5.1 Meiosis Defined
Meiosis produces gametes (egg and sperm cells).
During meiosis, hereditary info is exchanged involving the maternally and paternally inherited copies of a couple of chromosomes to be able to produce brand brand new combinations of genes. This technique of hereditary recombination really helps to increase hereditary variability within a species. It allows for the transmission of practically unlimited combinations of genes from moms and dad to offspring.
The ensuing gametes have actually 23 brand brand new chromosomes, one person in all the 23 pairs, representing unique combinations regarding the original maternal and paternal copies.
5.2 Meiosis Terminology—Homolog
Homologous chromosomes , or homologs, consist regarding the known people of any provided chromosome set. One person in the homolog could be the chromosome through the mom in addition to other user is through the dad.
During meiosis, homologs pair together.
5.3 Meiosis Terminology—Chromatid
A chromatid is created during meiosis and it is certainly one of two identical DNA strands formed after DNA synthesis. Continuer la lecture