IT TAKES TWO!!!Sexual Reproduction

TYPES OF SEXUAL REPRODUCTION Zygospores A reproductive part of a fungus or mould The hypha is a long branching filament

of the fungus The nuclei of two hyphae join to create a

zygospore When conditions are right (warmth,

moisture, etc.), the zygospore germinates and creates a new fungus.

Bacterial conjugation Bacteria are able to directly transfer

genetic material from one cell to another.

New characteristics may be created by the combination.

New cells with the changes will be created through binary fission

Sexual reproduction in plants Female part of the plant – pistil Pistil – stigma – where the pollen grains

land, style – the connecting tube from the stigma to the ovary, ovary – where the egg is located

Male part of the plant – stamen Stamen – filament – the support, anther

- the “bulb” that produces the pollen

When the pollen and egg unite, the fertilized egg is called a zygote.

When the zygote undergoes cell divisions, the multicellular organism is now called an embryo.

Self-pollination – both male and female parts are on the same plant

Cross-pollination – male and female parts are on separate plants.

Sexual Reproduction in Animals Also involve sex cells (sperm and egg).

Called gametes. Fertilization may occur inside (humans)

or outside (frogs) of the female Advantages?? Disadvantages??