Meiosis is an important source of genetic variation in sexually reproducing orga
ID: 83498 • Letter: M
Question
Meiosis is an important source of genetic variation in sexually reproducing organisms. Identify the key events in meiosis that result in segregation and independent assortment and how these two mechanisms produce genetic variation in the next generation. Use the following terms in your response: genes; alleles; homologous chromosomes; non-homologous chromosomes. (Please list the key events in meiosis result in segregation and independent assortment and use all the terms provided in ur explaination :D)
Explanation / Answer
segregation and independent assortment, the two important key which define the sexual variation occur in meosis I. this mainly occur in prophase I stage.
1. a diploid parents have two pairs of chromosomes. each of them have contributed one pair of chromosome to their child.
2. the homologous chromosomes cross over at the pachytene I of the meiosis I. this result in formation of two chromosomes having a pair of non-homologous chromosome.
3. after that chromosomes, start segerating and moves towards the pole in metaphase I.
this recombination of genes in chromosomes led to the genetic variation among the species.