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3 years ago

What would be the difference between a gene mutation and a chromosomal mutation?

Biology

1 answer:

Anton [14]3 years ago

3 0

Answer:

A gene mutation can be described as errors in the nucleotide sequence of a gene due to errors in the DNA replication process or due to any mutagen. On the other hand, a chromosomal mutation can be described as a change in the structure of a DNA or changes in the number of chromosomes.

A gene mutation occurs in a single gene whereas a chromosomal mutation will affect many genes. Hence, gene mutations will be comparatively less lethal than chromosomal mutations.

Example of gene mutation: Sickle cell anemia

Example of chromosomal mutation: Down's Syndrome

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A scientist claimed that hemophilia is caused by a functional deficiency in Factor VIII. The evidence in the passage that would

LekaFEV [45]

Answer:

C-able to relieve haemophilia

Explanation:

Factor V111 is a blood clotting factor;produced in the liver and body endothelial cells. It is usually exist as inactive form beacuse it is binded to glycoprotein (glycogen +protein) called Von Willebrand factor when released into the blood stream.

If absent in the gene of certain individuals due to mutations, it result in a sex-linked conndtion called haemophilia, where blood failed to clot when blood vessels are damaged leading to profuse bleeding/ hemorrhage.

Ideally in a normal individuals the inactive from of factor VIII are continuously circulated in inactive forms in the blood stream, until a damaged blood vessels occurs. At the injured site they are converted to active from called coagulating factor VIIIa,,by separation from Willebrand factor, react with coagulating factor IX to initiate clotting. The factor VIII is a co- factor for factor IX, and together with calcium ion,phospholipids converts t to factor IXa,

The latter converts prothrombin to thrombin. The thrombin convert fibrinogen to fibrin, which form a stable fibrin clot at the injured site to arrest bleeding. The cascade of events is lacking individual without factor VIII. Therefore bleeding occurs.

Consequently, symptoms of hemophilia can be relieved by a functional factor VIII, because it will prevent the deficiency in factor VIII in the affected individuals by acting as co-factors for the conversion of factor IX to IXa, to initiate clotting.

3 0

3 years ago

Two parents think their baby was switched at the hospital. It's 1968, so DNA fingerprinting did not exist. The mother has type "

hichkok12 [17]

Answer:

(A.) Mother's genotype: OO

(B.) Father's genotype: AB

(C.) Baby's genotype: BO

(D.) All possible genotypes:

(E.) Not necessarily! It is entirely possible that it is real offspring of the parents.

4 0

3 years ago

If you come across an unusual single-celled organism, what parts of the cell would you study in order to classify it into one of

anzhelika [568]

The correct answer is the nucleus and the cell wall. Cell walls and Nucleus are only found in specific cells. Prokaryotic cells are cells that do not have definite nucleus in their cells, while Animal Cells do not have cell walls, yet the Plant Cells have cell walls.

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3 years ago

Which of the following is a good indicator of reduced extinction threat for a species?

Alja [10]

Answer:

the answer is b., genetic diversity.

Explanation:

let's use bald eagles as an example..to save the species, scientists would raise eagle eggs until young adults, and kept wild. wen ready, they were chipped and released in different areas of the US. an eagle born in Washington, was released in Wisconsin to diversify the population.

6 0

3 years ago

Try This one out no links on My question or I will report you

vitfil [10]

The correct choice is velocity=distance/time of v=d/t

4 0

3 years ago