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Lerok [7]
2 years ago
6

Match each definition to the appropriate term. locus

Biology
1 answer:
liraira [26]2 years ago
4 0
I) Locus- the chromosomal site where a specific gene is located. A locus is a fixed position on a chromosome, like the position of a gene or a marker. Each chromosome carries ,many genes; human's estimated haploid (n) protein coding genes are about 20,000, on the 23 different chromosomes.


ii) Interference; the observed double crossover frequency differs from the expected double crossover frequency. Cross over interference is used to refer to the non-random placement of crossovers with respect to each other during meiosis. It results in widely spaced crossovers along chromosomes. Interference may exert its effect across whole chromosomes. As chromosomes in many eukaryotes are large, interference must be able to act over megabase lengths of DNA. 

iii) Linkage- the tendency for genes located in close proximity on the same chromosome to be inherited together. Normally when two genes are close together on the same chromosome, they do not assort independently and are said to be linked. Whereas genes located on different chromosomes assort independently and have a recombination frequency of 50%, linked genes have a recombination frequency that is less than 50%.

iv) Recombination- the process by which a new pattern of alleles on a chromosome is generated. Genetic recombination is the production of offspring with combinations f traits that differ from those found in either parent. During meiosis in eukaryotes, genetic recombination involves the pairing of homologous chromosomes. This may be followed by information transfer between the chromosomes. 
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Sally comes to the medical setting stating she has heartburn on a daily basis. She states that she has also been constipated.
swat32

Answer:

Magnesium hydroxide  Mg(OH)₂ is the formula for the antacid. Commonly known as milk of magnesia.

This antacid should be taken at bed time or one hour after meal. Once a day.

The routine medication should have at-least one hour gap with the antacid.

If sally develops diarrhea then the antacid should be discontinued.

Lifestyle changes that could help Sally's bowel and gastric conditions are:

  • High fiber diet.
  • Increased Water intake.
  • Regular exercise.
  • Less spicy died.
  • Taking meals at-least 3 hours before bed time.
  • Wearing loose fitting comfortable clothes.

Explanation:

  • following the symptoms it is assumable that Sally is suffering from GERD (Gastroesophageal reflux disease) which has resulted in constipation.
  • GERD is a condition when the stomach acid of a person moves into the esophagus due to incomplete closure of the lower esophageal sphincter .
  • Reflux of the stomach acid results in heart burn.
  • The best way to relieve this condition is to take an antacid having a bicarbonate, or hydroxide formula which will react with the stomach acid and neutralize it or a proton pump inhibitor which would check the production of stomach acids.
  • In Sally's case GERD is accompanied with constipation so she needs a antacid as well as laxative which will ease the bowel movement.
  • A proton pump inhibitor will not be a good choice because it might aggravate the constipation thus Milk of magnesia or any other antacid with magnesium hydroxide with a chief component should be prescribed.
  • Magnesium hydroxide is a laxative that acts as a mild antacid.
  • Milk of magnesia has been reported of having diarrhea as a side effect, so the medication should be discontinued if Sally suffers diarrhea after taking the medication.
  • GERD is best treated with lifestyle changes that include high roughage in diet, water intake, and physical exercise. These prevent the built up of acid in stomach and maintain the intestinal peristalsis thus regularizing the bowel movement and relieving acid acccumulation.

6 0
2 years ago
. It has been observed that organisms on islands are different from, but closely related to, similar forms found on the nearest
MatroZZZ [7]

Answer:

       The right answer to this question is option A) island forms and mainland forms descended from common ancestors.

       It's known in science that a long time ago, all the continents were only one, united all together in a bigger one. This can be observed by the way every continent can fit another one.

       A proof of that too, is evolution, when we find organisms in an island that share some characteristics with organisms from another island, that can mean some things, they come from the same place, or these islands share characteristics that lead these organisms to be this way through evolution.

3 0
2 years ago
A contraction of the smooth muscle in the walls of the bronchi and bronchioles that tighten and squeeze the airway shut is known
Romashka [77]

Answer:

Bronchospasm

Explanation:

Bronchospasm is known to be a condition that results from the contraction of the muscles that is found in the wall of the bronchioles which result into obstruction and narrowing of the respiratory airway. Thus, substance released from basophils or mast cell under the control of anaphylatoxin usually causes Bronchospasm. Furthermore, Bronchospasm is commonly caused by asthma and can also be caused by allergic reactions, respiratory infection, and chronic lung diseases.

3 0
2 years ago
The phosphorus in all biological tissues can be traced back to ________.
bezimeni [28]

Answer:

The phosphorus in all biological tissues can be traced back to phosphorus weathered from rock.

4 0
2 years ago
How does secreting oil onto their fur help otters maintain homeostasis?
sesenic [268]

Answer:

Oils repel water, so it helps these animals keep their fur dry, which helps them stay warm.

6 0
1 year ago
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