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egoroff_w [7]
3 years ago
13

A mutation that involves one or a few nucleotides is called

Biology
1 answer:
inysia [295]3 years ago
8 0

A mutation that involves one or a few nucleotides is called

a) mutagen

b) inversion

c) point mutation

d) translocation

Answer:

c) point mutation

Explanation:

When only one or a few nucleotides of a gene are changed by mutation, this is called a point mutation. A point mutation can add one additional nucleotide to the wild type gene or may delete or substitute a nucleotide from it. For example, if a wild type gene sequence is "ATATATATA", then the addition of "C" at the position 4 will change it into "ATACTATATA". This addition of new nucleotide is called point mutation since only one nucleotide is added to the gene. Point mutations can cause serious genetic disorders such as sickle cell anemia.

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What can help digestion give some examples and explain in short.
Katen [24]

Answer:Terms in this set (10)

Mouth

Teeth chop food & saliva breaks down food

Esophagus

Tube that connects mouth to the stomach (peristalsis)

Stomach

Organ that releases acid and juices & mixes with food to create chymes

Small Intestine

Greatest amount of digestion takes place (if taken out, it would be 21ft long) (takes 4hrs to get to the small intestine)

Liver

Gland that releases bile and filters poisonous waste

Gall Bladder

Small organ that stores bile (you can live without it)

Pancreas

Gland that produces digestive enzymes and insulin

Large Intestine

(colon) Tube extending the small intestine where your indigestive food is ready for elimination

Rectum

Short tube at the end of the large intestine

Anus

Opening to the outside of the body

Explanation:

The organs of the digestive system are the mouth, esophagus, stomach, pancreas, liver, gallbladder, small intestine, large intestine and anus. Recognizing how these organs work together to digest food is key to understanding how digestion works.

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