Answer:
The pituitary gland is very important as it takes messages from the brain (via a gland called the hypothalamus) and uses these messages to produce hormones that affect many parts of the body, including stimulating all the other hormone-producing glands to produce their own hormones.
Explanation:
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In a population of 10,000 individuals, 300 men are afflicted with a recessive, x-linked disease. 18 woman would be expected to be afflicted in this population
both sickle cell disease and cystic fibrosis. dominant X-linked disease. Gene variations on the X chromosome are the root cause of X-linked diseases. A variation in the one copy of the gene present in each cell is what causes the condition in males (who have only one X chromosome).
Red-green color blindness and hemophilia A: Red-green color blindness are two examples of X-linked diseases. Red-green color blindness is simply the inability to distinguish between the many hues of red and green.
Males who are hemizygous (i.e., have only one X chromosome) will fully express an X-linked disease. Females, who have two X chromosomes, on the other hand, will typically be carriers of the abnormality and are hence typically asymptomatic.
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Answer:
Most living organisms have
A. DNA
Explanation:
DNA Is all the info in our cells makes each organism what they are excet for some organisms like Eubacteria,some protista, and archaebacteria.
archaebacteria(The Bacteria that live in extremem places where no other organisms can live)
Answer:
Mass extinctions happen because of climate change, asteroid impacts, massive volcanic eruptions or a combination of these causes. One famous mass extinction event is the one that lead to the extinction of dinosaurs, 65 million years ago.
Explanation:
Chlorine
Explanation:
Chlorine is an element that has more valence electrons than oxygen but fewer valence electrons than neon, more protons than sodium but fewer protons than argon.
Element atomic number number of protons <u>number of valence electrons</u>
Oxygen 8 8 6
Neon 10 10 8
Since the number of valence electrons of the element is between that of oxygen and neon, the compound must have a valence electron of 7.
Only all the elements in group 7 on the periodic table fits this description.
Element number of protons
Sodium 11
Argon 18
The element must be between sodium and Argon. This suggest that the element is chlorine.
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