Question

summarize how double hybrid strains of corn are produced. Explain why hybrids mean that corn farmers cannot replant seeds produced by one year’s corn crop if they want the same results the following year

Explain how genetically modified crops are different from plants made through traditional plant breeding.

Answer 1

	AB	Ab	aB	ab
AB	AABB	AABb	AaBB	AaBb
Ab	AABb	AAbb	AaBb	Aabb
aB	AaBB	AaBb	aaBB	aaBb
ab	AaBb	Aabb	aaBb	aabb

The corn farmers cannot replant seeds produced by one year's corn crop if they want the same result rhe following year because rhe seed won't breed true. Hybrids are made by crossing two highly inbred parent plant . Every seed that is planted has the exact same genetics. But as the plant grows and plants are fertilized , hybrid plant start breeding with each other. This creates a lot of variability in the genetics of the corn kernels (seed). So the crop from these seed will be inconsistent. And the overall yield will be less. Often the seeds are generally sterile.

Genetically modified crops are also know as transgenic crop. It contains gene (s) that has been artificially inserted instead of the plant acquiring it through pollination. They are the plants that has novel combination of genetic material obtained through the use of modern biotechnology. The GM crops generally shows desired traits and are more stress tolerant. Example- BT cotton

Where as the  traditional plant breeding methods is the development or improvement  of cultivars using conservative tools for manipulating plant genome within the natural genetic boundaries of the species. In this, qualitative traits are easier to breed than qualitative trait.

Please like the answer. Thank you :)