A trade of chromosome segments among non-sister homologous chromatids happens and is referred to as crossing over.
Crossover happens while  chromosomes, usually  homologous times of the equal chromosome, spoil after which reconnect however to the specific quit piece. If they spoil on the equal location or locus withinside the collection of base pairs, the end result is an trade of genes, referred to as genetic recombination.
<h3>What are homologous chromosome?</h3>
Homologous chromosomes are made from chromosome pairs of about the equal length, centromere position, and marking pattern, for genes with the equal corresponding loci.
Thus it s well expalined.
To leran more about the segments refer to link ;
brainly.com/question/795778
 
        
             
        
        
        
The difficulties encountered in studying living cells of
multicellular organism is that they are difficult to be tackled on as they are
compose of cell that is more than one, making it hard for them to be studied
and to be identified with different organisms composing multicellular or has
more than one cell.
 
        
             
        
        
        
While scientists have made enormous discoveries, there is always more to learn. Knowledge is built on and reviewed. Sometimes new information reveals an error in understanding from the past. The study of how the world works is always ongoing.