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Zolol [24]
4 years ago
15

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

Biology
2 answers:
UNO [17]4 years ago
8 0

Answer:

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

Explanation:

BabaBlast [244]4 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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If a cell contains a set of duplicated chromosomes, does it contain any more genetic information than the cell before the chromo
zmey [24]

Answer:

No.

Explanation:

When the set of chromosomes are duplicated, it means the chromosomes will be double the number.

However the genetic information will not change. It will remain the same.

Duplication of chromosomes is usually occurs among the interphase stage of mitosis where chromosomes will duplicate to ensure the formation of two identical daughter cells.

In these cells there will be no addition or variation in genetic information.

5 0
3 years ago
All of the following are examples of environmental influences on the development of personality disorders except __________. A.
Elden [556K]

The answer is C. This is because the other choices involve experiences (most during childhood a significant phase in humans development) that are environmental factors that impact on the human personality. In choice C, there is little development since its adulthood phase and on the other hand, refusing to display warmth and emotion is not an experience.






5 0
3 years ago
Read 2 more answers
What property of membranes allows interactions to take place within the membrane, including the assembly of membrane protein clu
Greeley [361]

Answer:

Phospholipid bilayer.

Explanation:

The plasma membrane (also known as the cell membrane or cytoplasmic membrane) is defined as a biological membrane that separates the interiors of a cell from its external environment.

The plasma membrane has a function that protects the cell from its external environment, mediates cellular transport, and transmits cellular signals.

It is composed of a lipids bilayer (phospholipids and cholesterol), (phospholipid is a lipid made of glycerol, two fatty acid tails, and a phosphate-linked head group) with embedded proteins, the plasma membrane is selectively permeable to ions and organic molecules which hence, regulates the movement of substances in and out of cells. Plasma membranes is very flexible in order to allow cells change form example, red blood cells change shape as they pass through narrow capillaries.

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3 years ago
What is the best classification of the stimuli described in the following scenario? You are quietly reading a book on the beach.
soldi70 [24.7K]
Fight or flight, because according to Hans Selye, this occurs at times of danger when your adrenaline is heightened.
7 0
3 years ago
The sun’s energy is absorbed by plants and converted into glucose during __________. Animals eat the plants and convert the gluc
Dimas [21]
Your answer is c. hope this helps (;
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4 years ago
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