A botanist scrapes pollen off a flower of one plant and then uses it to pollinate the flower of another plant. What can be scientifically concluded about their offspring?
A. They will have a large amount of genetic variation.
B. They will have twice the number of chromosomes as their parents.
C. They will be genetically distinct from their parents.
D. They will be able to reproduce only asexually.
Plants' xenogamous system has high probabilities of introducing genetic variation between plants. Option A) They will have a large amount of genetic variation.
There are two general crossing systems in plants, which depend on pollination type.
Sexual reproduction gives more possibilities to different alleles of a gene that did not appear in one generation to express in the next generation.
Both types of pollination allow genetic variation, however by the occurrence of crossed pollination there are more chances to ensure the variability of the species and survival to environmental changes.
While by self-pollination there are more chances to express the same genotype of the parental plant.
The Xenogamous system has the advantage of avoiding the effects of endogamy in a population by increasing genetic variability.
In the exposed example, the botanist is acting as the pollinator agent, allowing one plant's pollen grain to fertilize the egg of the other plant.
The merging of these gametes will introduce variation since there will new allelic combinations.
The correct option is A). They will have a large amount of genetic variation.
You can learn more about crossed-pollination at
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