3 + 4 continued.

No of parents: 1 in asexual. 2 in sexual
No of offspring: many in asexual. Few to many in sexual.
Variety of offspring: genetically identical in asexual. Genetically different in sexual.
Speed: fast in asexual. Slow in sexual.
Timing, anytime once mature in asexual. Mature and needs partner in sexual.

3.3

Know conjugation, hermaphrodites ad flower parts.
External fertilization - fusion of sperm and egg outside the female. Conditions make eggs vulnerable.

Internal fertilization - sperm and egg inside the female. Eggs protected by mother.

3.4

Know seeds, and diagrams.

Pollen fertilizes eggs > after fertilization: sepal wilt, and ovary enlarged into fruit > immature fruit > mature fruit.

Know the functions of what the embryo does whilst developing in the mother.

3.5

Selective breeding - two organisms with desirable traits are bred with each other for better quality.

AVR - growers have desirable plant traits they take cuttings from it and grow new similar plants.

Artificial insemination - when a vet collects sperm from a male animal and inserts it into a female of the same species. For desirable traits across globe.

In vitro - fertilization occurs in petrie dish.

Hatcheries - fish are caught before mature, collect eggs and sperm and mix them. Ensures higher rate of survival.

Recombinant DNA - combining genes from different individuals into a single molecule of DNa. Eg growth hormones.

Genetic engineering - organisms with genes that have been genetically altered to resist spoilage, and other improve quality.