It refers to making or crating new genes in form of mutation
in duplicates of old genes. It is also a mechanism in major way through new
genetic material is generated during evolution. The duplication happens in
event termed unequal crossing over or recombination between misaligned
homologous chromosomes during meiosis.
All organisms are made of cells
all existing cells are produced by other living cells
the cell is the most basic unit of life
Answer:
B. it expands and shrinks in the soil