The property of Henrietta Lack's cells that was most unusual when they were grown in the laboratory was that THEY CONTINUE TO DIVIDE AND MULTIPLY AFTER DECADES OF CULTURING.
Henrietta Lack's cells refers to the sample of cancerous cells that were extracted from a cancer patient named Henrietta for examination in the laboratory. The cells were cultured in the laboratory and they were used for research purposes. One surprising thing that scientists discovered about the cells is that the cells have the ability to continuously divide and multiply even many years after extracting them from their source.<span />
The offspring are identical to their parents
The first plants in a novel environment
will be algae, lichen, and bryophytes. These plants are referred to as pioneer
plants. After these plants have broken down the rocks, and begin to form soil,
then you begin to see plants such as
herbs, ferns, and grasses. Eventually, vascular plants will be found in
the habitat.
New environments, such
as those formed by a lava flow from
volcanos, are majorly comprised of rocks.
These are not an ideal substrate for higher plants since they do not form
a great substrate
for anchoring of the plant and the plants are unable to reach and take up the nutrient held
in the rocks. Pioneering plants’ roots are able to penetrate
the small crevices in rocks and cause mechanical weathering. These plants also secrete organic acids that chemically weather the rocks hence are significant
in soil formation and release of nutrient from the rocks (nutrient cycling).
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