Answer:
Hello!
The answer is C) substitution
Explanation:
Substitution:
A kind of mutation that involves the substitution of a single nucleotide by another, without changing the frame of reference of the DNA sequence. In this particular example, the thymine in the codon GAG (codes for glutamic acid) is being substituted by the base adenine, leaving the codon GTG (codes for the amino acid, valine).
The described substitution occurs in the case of the disease, sickle cell anemia that yields abnormal heamoglobin.
- A) A deletion removes a base from the DNA sequence. This alters the frame of reference of the mRNA.
- B) An insertion involves the addition of a base into the DNA sequence.
- D) A silent mutation substitutes a base in such as way that the new codon codes for the same amino acid, conserving the function and structure of the protein; therefore, silent mutations are harmless.
It is commonly found in citrus fruits (such as lemon and limes), sour milk products (like yogurt, cheese, and sour cream), and fermented substances (including wine, vinegar, pickles, sauerkraut, and soy sauce).
A biomass pyramid will show this
respiration:
uses oxygen
releases carbon dioxide into the air
converts food to usable energy
photosynthesis:
produces food for the plant
requires chlorophyll
used carbon dioxide and water
transpiration:
pulls water from roots to the leaves
returns water to the air
important part of the water cycle
sorry if this answer was too late ;)
<span>Step1; Like all strong winds and storms, tornadoes begin when the sun heats the surface of the land. As the warm, less heavy air begins to rise, it meets the colder, heavier air above it creating a strong circular wind. A wind shear is when two winds at different levels and speeds above the ground blow together in a location. </span>
<span><span>Step 2: </span>The faster moving air begins to spin and roll over the slower wind. As it rolls on, it gathers pace and grow in size.</span>
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Step 3: At this stage, it is an invisible, horizontal wind spinning and rolling like a cylinder. As the winds continue to build up, stronger and more powerful warm air forces the spinning winds vertically upward, causing an updraft.
<span>Step 4: </span>With more warm air rising, the spinning air encounters more updraft. The winds spin faster, vertically upwards, and gains more momentum.</span>
<span>Step 5: At this stage, the spinning winds, creates a vortex and the wind has enough energy to fuel itself.
Step 6: The tornado is fully formed now and moving in the direction of the thunderstorm winds. When the pointed part of the tornado touched the ground from the cloud, it is often referred to as </span>'touch down'<span>
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