Please enable JavaScript.
Coggle requires JavaScript to display documents.
REPRODUCTION - Coggle Diagram
REPRODUCTION
ASEXUAL REPRODUCTION
-
ADVANTAGES
- Some of the parent's cells divide by mitosis, making new cells that are genetically identical to the parent cell (clones)
- Does not produce genetic variation — useful if a plant is growing well in a particular place and is adapted to its environment.
- Offspring inherit the same genes and will be equally well adapted.
- A single organism can reproduce on its own — no need to wait to be pollinated or find a mate.
- Best option if there is only a single one growing in an isolated place.
- Used by farmers and commercial growers to produce many more plants with flowers exactly the same as the parent plant.
DISADVANTAGES
- No genetic variation — if a new disease comes along or the environment changes, offspring may all be vulnerable.
- If a plant is not doing well in its environment, it cannot produce better adapted offspring.
- If new plants are produced asexually over long periods, they may all become vulnerable to pests or diseases.
Processes that make more of the same kind of organism.
New organism obtains a set of chromosomes from parent or parents
SEXUAL REPRODUCTION
process involving the fusion of the nuclei of two gametes to form a zygote and the production of offspring that are genetically different from each other
-
ADVANTAGES
- Some of the parent's cells divide by meiosis, producing gametes with half as many chromosomes and a new combination of genes.
- Produces offspring that are genetically different from their parents.
- Genetic variation is useful if a plant is not doing well or if a new disease comes along — some offspring might be better adapted or resistant.
- Farmers and commercial growers use it to produce new varieties.
DISADVANTAGES
- Needs two gametes to combine at fertilisation — requires a mate or pollination.
- Takes more time than asexual reproduction.
- Not as useful if an organism is isolated or if there are few others around.
- Less predictable results — not all offspring will have the same desirable characteristics as the parent plants.
-
