Climate change is the choice that answers your statement
<span>Dense layer holding in natural gas and petroleum</span>
Answer:
Crossing over is termed as a process by which genetic materials are exchanged by non-sister chromatids during meiosis. Crossing over results in the new combination of information in genetic for, the cell for a specific trait. It ensures that organisms are identical from one generation to another.
Explanation:
The size and position of their centres are the same for homologous Chromosomes
