Reproduction in which only one parent organism reproduces itself Asexual Reproduction Reproduction in which only one parent organism reproduces itself

Binary Fission Single-celled organisms (bacteria) Replicate its DNA Split in half

Binary Fission

Euglena

Salmonella

Budding Cells grows on a parent Detaches to form a separate organism Occurs by mitosis

Hydra

Hydra

Vegetative Propagation Plants Examples: grasses, strawberries Occurs by mitosis

Regeneration Growing a new body part

Salamander

Fragmentation Forming a new organism if a piece is broken off

Planaria

Parthenogenesis Unfertilized egg develops in an adult Example: honey bees

Sexual Reproduction Usually requires two parents Offspring are not genetically identical to either parent

Fertilization Union of a male and female gamete Example: frogs

Pollination In plants Transfer of pollen from the male organ to the female organ

Transfer by insects

Pollination by plants