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melisa1 [442]
4 years ago
12

" A single gene produces two different proteins, utilizing different exons. Produce the explanation"

Biology
1 answer:
bezimeni [28]4 years ago
4 0

Answer:

Explanation:

Exons can be shuffled  independently known as exon shuffling. It can be done in various ways, leading to infinite number of combinations to discover new and meaningful coding sequences hence various proteins. Due to exon shuffling, evolution need not  occur only by the slow accumulation of point mutations but  might also move ahead by “quantum leaps” with new proteins  appearing in a single generation.

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Which of the following events takes place in the electron transport chain?
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Answer:

The correct answer is C  the extraction of high energy electrons remaining from glycolysis and citric acid cycle .

Explanation:

Electron transport chain(ETC)  occur in mitocondria and is the last process of aerobic respiration.ETC deals with the transfer of electron from the reducing equivalent such as NADH,FADH2 thereby oxidising them to their oxidized form NAD+,FAD.

            The liberated electron from these equivalents utilizes the proton motive force come from the transport of H+ ion cytosol to mitocondrial matrix and then result in the phosphorylation of ADP to form ATP along with H2O by the reduction O2.

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torisob [31]

Answer:

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4 years ago
A particular cell has a mutation that causes it to make defective centromeres. What would you expect to occur during mitosis for
cluponka [151]

Answer:

Chromosomes will not align at the equator of the cell, and subsequently will not separate to opposite poles.

Explanation:

Mitosis is a cellular division that results in daughter cells with identical copies of the genetic material as the parent cell. Mitosis is characterized by different stages viz: Prophase, Metaphase, Anaphase, and Telophase. The centromere is a very important part of the cell during division as it produces microtubules that grows out and bind to the kinetochore of each chromosome, hence, aligning them at the CELL PLATE (cell equator) and subsequently pulls them apart to opposite poles. This alignment and pulling apart occurs during METAPHASE and ANAPHASE respectively.

Mutation is any change that occurs in the nuceleotide sequence of the genetic material (DNA). If a change/mutation occurs leading to a defective or non-functional centromere, the centromere will no longer be able to produce microtubules that will bind to the kinetochores of each chromosome. Therefore, the chromosomes will be unable to align at the equator/middle of the cell and most importantly, inability to separate to opposite poles, which is the main point of Mitosis.

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