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Zolol [24]
2 years ago
15

What is one way that changes can occur in a dna sequence

Biology
2 answers:
UNO [17]2 years ago
8 0

Answer:

Mutation. A mistake made while DNA copies which causes changes in DNA

Explanation:

BabaBlast [244]2 years ago
8 0

Answer: Mutation

Explanation: Mutation is a permanent change in the nucleotide sequence of a DNA. This change occurs during replication where one or more base pairs is either substituted, inserted or deleted in the nucleotide sequence of a DNA. These alterations in the DNA sequence produce permanent changes in the genetic information encoded in the DNA. Substitution mutation occurs when one or more base pairs are replaced by another. Insertion mutation occurs when one or more base pairs are added in a nucleotide sequence while deletion mutation occurs when one or more base pairs are removed from a DNA sequence. When these mutations are not adequately repaired by the DNA repair system, these will lead to production of an RNA with an altered nucleotide sequence and will result in the production of a protein with an altered amino acid sequence. The alteration in the amino acid sequence of the protein will result in loss of or altered function of the protein and will ultimately lead to the expression of a different trait in the organism.

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8 0
2 years ago
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olasank [31]
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8 0
2 years ago
Read 2 more answers
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It’s be because the sugar is burning
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2 years ago
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During the repolarization phase of an action potential which of the following is the primary activity in the membrane of the pos
AysviL [449]

During the repolarization phase of an action potential which of the following is the primary activity in the membrane of the post-synaptic cell?

A) Sodium ions are flowing out of the cell.

B) Sodium ions are flowing into the cell.

C) Potassium ions are flowing into the cell.

D) Potassium ions are flowing out of the cell.

Answer:

D) Potassium ions are flowing out of the cell.

Explanation:

The threshold opens both voltage-gated Na+ channels and the voltage-gated K+ channels. The voltage-gated K+ channels are very slow in opening. Therefore, they open when the voltage-gated Na+ channels are closing. The opened voltage-gated K+ channels are responsible for the repolarizing phase.

During this phase, the inflow of Na+ becomes less as the responsible channels are inactivated. The opened K+ channels allow the K+ to move out of the post-synaptic cell. It results in the generation of negative charge inside the cell membrane as the membrane potential reduces +30 mV to −70 mV.

3 0
2 years ago
(c) Describe the hormone and signaling protein combination that produced the greatest and most prolonged response. For the phosp
lawyer [7]

Answer:

Insulin and protein kinase B interaction is the greatest and most prolonged response as is seen in the graph. Protein kinase B level reached to 100 after 30 minutes as insulin added while the level remained to near 80 even after 240 minutes.

The level of STAT 5 at the 10th minute = 100

The level of STAT 5 at 30th minute = 35

From 10 to 30 minutes, the level of STAT 5 = 100 – 35

From 10 to 30 minutes, the level of STAT 5 = 65

Duration = 30 – 10 minutes

Duration = 20 minutes

Rate of decrease = 65/20

Rate of decrease = 3.25 levels/min

6 0
2 years ago
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