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Lina20 [59]
3 years ago
7

Normal red blood cells slide easily through narrow blood vessels. In sickle cell disease, many red blood cells change to a cresc

ent shape like a slender moon. Crescent-shaped blood cells cause blockages in blood vessels. These blockages decrease the transport of oxygen. People with sickle cell disease often have sharp pains due to the lack of oxygen in parts of the body.
Sickle cell disease is caused by an abnormal type of red blood cell gene inherited by the parents. What is the name for different forms of the same gene?
Biology
1 answer:
Alex787 [66]3 years ago
6 0

Answer:

An allele

Explanation:

Some genes have a variety of different forms, which are located at the same position, or genetic locus, on a chromosome

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B. 5

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What molecule is the source of information for transcription.
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DNA is the molecule, which is the source of information for transcription.

• During the process of transcription, RNA polymerase is an enzyme, which is accountable for copying a sequence of DNA into a sequence of RNA.

• The RNA polymerase monitors the phenomenon of transcription.

• At the time of transcription, the information is stored within a molecule of DNA, which is further copied into a new molecule of messenger RNA.

Thus, the correct answer is DNA.

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brainly.com/question/16512679

7 0
2 years ago
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Anna007 [38]

Energy is decreasing by 500 because some of it is turned into heat energy.

Explanation:

when an animal/creature consumes another living thing and or something that has energy it is decrease to a certain amount because some of the energy that the original animal/creature had is turned into heat energy because they use some of the energy for themselves to survive and live.

For example:

A flower is a producer because it produces energy and gets it gets eaten by a deer and some energy gets changed to heat and the other is consumed by the consumer (the deer) and so on.

6 0
3 years ago
How would you account for the fact that fossils of fish are not present in the older layers of rock?
Mademuasel [1]

Answer:

The fish did not yet exist when the old layers of rocks were deposited. In fact, animals with hard parts did not evolve until about 600 million years ago, which is only about 13% of the 4.5 billion year age of the Earth. Multicellular animals without hard parts left tracks in older sediments, but had no fossilize-able body parts.

Explanation:

5 0
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