Answer:
to maintain internal balance
Explanation:
Scales of a fish, I kind of read or heard people getting drafts of fish skin which might be the same.
Answer:
I believe coronavirus is a man made virus from China except that it got released into the public.
Explanation:
The childhood and early career of Charles Robert Darwin is discussed below.
<h3><u>Explanation</u>:</h3>
Charles Robert Darwin was born on 12 February 1809 in Shrewsbury, Shropshire. He was the fifth of six children of wealthy society doctor and financier Robert Darwin and Susannah Darwin. His grandfathers Erasmus Darwin and Josiah Wedgwood were both prominent abolitionists of the recent times.
Darwin started his career as an apprentice doctor, helping his father treat the poor of Shropshire, before he started to go to the University of Edinburgh Medical School. He found the lectures dull there and in his second year at the university he joined the Plinian Society, a student natural-history group. His father then sent him for a Bachelors of Arts degree which also he couldn't peruse.
After a long fight, he went on his famous voyage on HMS Beagle around the world where he collected his data and then gave his hypothesis in his book named '' On the Origin of Species by means of Natural Selection and Preservation of the Favoured Race in the Struggle for Life''
New techniques to produce cells with the characteristics of embryonic stem cells include Parthenogenesis, retroviral transduction of transcription factor genes into adult skin cells (iPS), and somatic cell nuclear transfer (SCNT).
<h3>What is
embryonic stem cells?</h3>
- Pluripotent stem cells called embryonic stem cells are produced from the inner cell mass of a blastocyst, a preimplantation embryo in its early stages.
- Four to five days after fertilization, human embryos reach the blastocyst stage, consisting of 50 to 150 cells.
- Embryonic stem cells (ESCs) are stem cells that come from an embryo's core mass of undifferentiated cells.
- In laboratories, typically fertility clinics, 4- to 6-day-old embryos are used to produce human embryonic stem cells.
- The core embryonic cells are taken out and put in a dish with the nutrients they require to thrive.
- Theoretically, embryonic stem cells are capable of mass-producing any kind of tissue.
- These cells are used by researchers to investigate disease and development in the hopes of developing therapies.
- A single embryo's two or three dozen cells can produce millions of embryonic stem cells in about six months.
Learn more about embryonic stem cell here:
brainly.com/question/18243320
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