Question
Biology Question on Principles of Inheritance and Variation
Crossing over is the exchange of genetic material between
A
non-sister chromatids of the homologous chromosomes
B
sister chromatids of the homologous chromosome
C
chromatids of non-homologous chromosomes
D
the genes those are completely linked
Answer
non-sister chromatids of the homologous chromosomes
Explanation
Solution
Crossing over is a process that produces new combination of genes by interchanging of segments between non-sister chromatids of homologous chromosomes. It occurs between homologous chromosomes at four standard stage during pachytene of prophase-I of meiosis-I.