Probably 3 %. a mother could give birth to a child with Trisomy 21 at any age because Trisomy 21 is a mutation and mutations happen all the time. Not all mutations are as Down Syndrome. A child born to two homozygous brown eyed parents could be born with blue eyes even if no one in the family had blue eyes. The child would develop blue eyes due to mutation.
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antagonism
When two hormones cancel each other out or have opposite effects it is called antagonism.
<h3>What is an example of antagonism?</h3>
- Traditional examples of antagonistic hormones include insulin and glucagon.
- In contrast to glucagon, which stimulates glycogenolysis, or the conversion of glycogen to glucose, insulin stimulates glycogenesis, or the conversion of glucose to glycogen.
<h3>What does the term "antagonistic hormones" mean?</h3>
- Antagonistic hormones are those that work to bring body circumstances back from extremes to within acceptable bounds.
- An illustration of how the endocrine system maintains homeostasis through the action of antagonistic hormones is the regulation of blood glucose concentration (by negative feedback).
<h3>How do antagonists to hormones function?</h3>
- Infertility, endometriosis, and uterine fibroids are just a few of the diseases that gonadotropin releasing hormone (GnRH) antagonists are used to treat in women.
- GnRH is a hormone released by the hypothalamus that is the target of GnRH antagonists, which stop it from functioning.
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Answer:
D.
Explanation:
I think its D. sorry if its wrong
The correct answer is D: I and II only.
Viruses have protein capsids, which protect their genetic material. This capsid sometimes is covered by viral envelopes which have glycoproteins on their surface. Glycoproteins help in the process of binding to the host cell and infecting it. In this example, virus III has the structure of a bacteriophage and it does not seem to have glycoproteins. Bacteriophages use their tail fibers to attach to the bacterial host and inject their genetic material. On the contrary, viruses I and II have glycoproteins sticking out of their envelopes.
