EVOLUTION
SOURCES OF VARIATION IN A POPULATION
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
Out breeding
|
|
|
In breeding
|
|
|
Cross breeding
|
|
|
Don’t know? Choose me
|
Detailed explanation-1: -A plant variety represents a more precisely defined group of plants, selected from within a species, with a common set of characteristics. SPECIES.
Detailed explanation-2: -Because of selective breeding, future generations of selectively bred plants and animals will all share very similar genes which will reduce variation. Genes and their different alleles within a population are known as its gene pool.
Detailed explanation-3: -In animal breeding, techniques such as inbreeding, linebreeding, and outcrossing are utilized. In plant breeding, similar methods are used. Charles Darwin discussed how selective breeding had been successful in producing change over time in his 1859 book, On the Origin of Species.
Detailed explanation-4: -The genetic group of animal, season of calving, parity of animal, and birth weight of calf were found to be significant sources of variation in the GL of the Jersey crossbred cattle, whereas the period of calving and sex of calf did not affect this trait.