To maintain a line of pure-breeding peas, selective breeders would use a technique called artificial cross-pollination. This is a technique were breeders transfer pollen from the anthers of one pea plant (male parent) to a stigma of a flower (female parent).
This technique was developed by Gregor Mendel, the founder of the science of genetics. He was a monk who dedicated his time in research about how genes of plants are carried over through specific species. In his controlled experiment he used the pea plant because they are cheap and readily available from merchants who sold them in different classifications. He also used pea plants because they have the capacity to self-pollinate or cross-pollinate.
Answer:
In heart valve disease, one or more of the valves in your heart doesn't work properly. Your heart has four valves that keep blood flowing in the correct direction. In some cases, one or more of the valves don't open or close properly. This can cause the blood flow through your heart to your body to be disrupted.
Answer
Nutrition in an Amoeba occurs through a process called phagocytosis
Explaination
where the entire organism pretty much engulfs the food it plans on eating up. ... It involves the ingestion, digestion and egestion of food material. Amoeba does not have any specialized organ for nutrition.
Answer
large-scale natural disasters
Explanation:
The niceties of civilization are generally unavailable over wide areas when they are affected by ...
hurricanes
earthquakes
tornadoes
Such situations often require rescue workers.
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