<span>Crossing over refers to the exchange of genetic material, and it is a segment of meiosis that happens during prophase 1. This is the first phase of meiosis, which includes the appearance of chromosomes, the occurrence of crossing-over, the disappearance of nucleolus, as well as of nuclear envelope. </span>
Answer:
is there a attachments???
Deoxyribonucleic Acid
Apologies if I butchered the spelling ^^'
Possibly DNA ligase......................
Explanation:
leukocyte cells as neutrophils has the property of phagocytosis. and lymphocytes cells such as B & T lymphocytes in which b-lymphocytes produces antibodies against particular antigen and T Lymphocytes destroy infected cells.