Explanation:
In the majority of cases, the extra copy of chromosome 21 comes from the mother in the egg.
In a small percentage (less than 5%) of cases, the extra copy of chromosome 21 comes from the father through the sperm.
In the remaining cases, the error occurs after fertilization, as the embryo grows.
Average annual precipitation and temperature.
Scientific validity is the applicability of a conclusion drawn in the context of a scientific experiment to the world at large.
A former meadow is turned into a housing complex, and the next year, fewer milkweed blooms are seen due to pollination.
What applications does milkweed have?
The herb has also been used medicinally despite the danger of poisoning. Many native cultures chewed the roots of milkweed to heal diarrhea and used the sap to remove warts. Infusions and salves were also made from it to treat asthma, coughing, fevers, rashes, and swelling.
What kind of soil is ideal for milkweed growth?
In regions with more rainfall, like the eastern United States, milkweed thrives. Asclepias tuberosa, sometimes known as butterfly weed, thrives in drier climates like those in the western United States. Sand or gravelly soils are required. The Clay variety is an anomaly since it thrives on heavier soils, especially dry clay. Plant under the intense sun.
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