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2 years ago

Mutations in DNA include deletions and insertions. These types of mutations:

Biology

1 answer:

pantera1 [17]2 years ago

6 0

Answer:

(A). Result in different amino acids to be read due to frame shifts

Explanation:

Insertion or deletion mutations (or Indel mutations) can be defined as mutations in DNA due to insertion (addition) or deletion of nucleotide bases in DNA.

These mutations lead to change in reading frames (sequence of codons), which leads to formation of protein having completely different amino acid sequence. Hence, these mutations are also cause frameshift mutations.

This is due due to triplet nature of genetic codes as insertion or deletion of one or more bases (but not three) would change change in codon sequence and mutated sequence can form a non-functional or truncated protein.

Thus, the correct answer is option (A).

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Living organisms respond to changes in environmental conditions such as temperature. Which series lists the correct order in whi

Afina-wow [57]

The correct sequence is option (c)

All the living organisms in the world responds to the environmental conditions and that condition could be temperature, pressure, etc. The changes in the environmental conditions are first observed by the cells of the body and then by the tissues and then from tissues it gets transferred to the organ then to organ system and finally the organism responds to the change.

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3 years ago

Read 2 more answers

What is the Molecular mechanism of DNA replication?

kolezko [41]

Answer:

DNA replication a process of copying of a cell's DNA. DNA replication is semiconservative process which means that each strand in the double helix helps in the synthesis of new, complementary strand and conserve the parent template.

The Molecular mechanism of DNA replication is as following:

The double starnded DN in binded with hydrogen bond, the enzyme helicase opens up the DNA at the replication fork.
A single stranded binding protein prevent the rewinding of DNA and so binds to the DNA around the replication fork
Topoisomerase prevent supercoiling at replication fork.
The ezymes primase come in action and produces RNA primers which are complementary to the DNA strand.
DNA polymerase III help to extends the primers and allow them to add to the 3' end, to make new DNA.
DNA Polymerase then remove RNA primers and replace with DNA.
DNA ligase blocks the the gaps between DNA fragments.

So, this is the molecuar mechanism of DNA replication.

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2 years ago

5. Explain how selection might be different if there were brown grasshoppers in

Semenov [28]

Answer:

Explanation:

Selection breeding is use to identify individual with good physical characteristics that can be used as parent in next generation. Brown, yellow, green grasshoppers are the distinct phenotypic characteristics of an individual hence selection will be individual base. Such that brown individual will be selected, green selected seperated and yellow will also selected. The organism that shows the best fits are often been selected depending on the objects of the selection

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3 years ago

Mammals do not produce digestive enzyme B. However, sheep and cattle are two types of mammals that contain microorganisms in the

Pepsi [2]

Answer: The differences in the assembly and organization of the monomers of these two polymers result in different chemical properties.

Explanation:

Starch and Cellulose flare both polysaccharides which are constructed from the same monomer called glucose. The functions they provide in plants are different which includes the following:

- STARCH is used by plants for energy storage because unlike Cellulose, it's formed from glucose units( oriented in the same direction) connected by alpha linkages which can form compact structures that can easily be broken down.

- Cellulose provides structural support for plant cell wall because unlike Starch, it's formed from glucose units( which rotates 180 degrees around the axis of the polymer backbone chain) connected by beta linkages. This pattern gives Cellulose it's rigid features as is allows for hydrogen bonding between two molecules of Cellulose.

Therefore the statement that best describes why starch and cellulose provide different functions in plants is that (The differences in the assembly and organization of the monomers of these two polymers result in different chemical properties).

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2 years ago

Which is not a principle of the cell theory?

Sidana [21]

Answer:

very few cells are able to reproduce

Explanation:

8 0

3 years ago