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Sophie [7]
3 years ago
5

You have identified two mutants with same phenotype.

Biology
1 answer:
algol133 years ago
7 0

Answer:

No, there are multiple ways in which different mutations in the same gene can cause the same phenotype

Explanation:

Several different mechanisms of mutation can lead to the same phenotype. For example, lets say our phenotype is that flies have white eyes, and we know that this occurs in one particular gene that normally makes the eye colour red. (the red gene)

These mutations likely rendered the red gene ineffective (as the eyes are not red). However, this could happen in a variety of ways.

  • There could be a single base deletion in the first exon of the mRNA, changing the reading frame of the protein and messing up the entire sequence (a frame shift mutations)
  • The entire gene could be deleted
  • A single base could be substituted in an important site of the gene, for example, one which translates into a catalytic residue or binding site in the protein
  • There could be an inversion at the promoter region of the gene, such that a transcription factor can no longer bind to transcribe the gene.

There are countless other ways in which a mutation could have been caused. Therefore, just because we know the same gene is affected does not mean that we can assume the mutations are identical.

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What is the building block of all Nucleic Acids?
DaniilM [7]

Answer:

A nucleotide is the basic building block of nucleic acids. RNA and DNA are polymers made of long chains of nucleotides. A nucleotide consists of a sugar molecule (either ribose in RNA or deoxyribose in DNA) attached to a phosphate group and a nitrogen-containing base.

Explanation:

3 0
3 years ago
The process of _____________ is modeled in the plant cell diagrams seen here.
grigory [225]

<u>Answer:</u>

The process of "Osmosis" is modeled in the plant cell diagrams seen here.

<u>Explanation:</u>

Osmosis is the natural gross migration of solvent particles into a zone of higher solute concentration via a selectively permeable membrane, in the path that seeks to balance the amounts of solvents on both the ends. Osmosis as biological membranes are semipermeable, is a critical mechanism in biological systems.

Such membranes are usually impenetrable to massive and polar molecules like polysaccharides, ions and proteins while being porous to hydrophobic or non-polar molecules like lipids and to small molecules as carbon dioxide, oxygen, nitric oxides and nitrogen.

4 0
3 years ago
Which is a step of the scientific method in environmental science? A. Testing a hypothesis B.Carrying out research C.Collecting
atroni [7]

Answer:

The correct answer is Option B (Carrying out research). The step that follows this step involves forming B.a conclusion

Explanation:

The Natural environment  around us is a function of both the living things and the non-living things. So, environmental science is the study of the natural environment around us. This study includes how to tackle environmental problems and further study on how humans could be impacted by the interactions with their environment. The scientific method is a step taken towards ensuring development in a field by bringing new discoveries and challenging existing beliefs through scientific tests and research. Generally, for most scientific methods of many fields, it starts with:

1. Observations

2. Making inquiry which involves asking questions

3. Forming a hypothesis, which means making untested assumptions

4. Conducting an experiment to check the hypothesis

5. Analyze the results

6. Publish the results

The correct answer is Option B (Carrying out research). Because it involves the scientific method highlighted above. The step that follows this step involves forming B.a conclusion

4 0
3 years ago
What are 3 ways that compounds and mixtures differ
professor190 [17]

Answer:

3 ways to understand the differences between compounds and mixtures are described below in explanation.

Explanation:

1. In a mixture, no new product is formed. It is a simple tacking of two molecules without any chemical reaction occurring. For example water and sand. Compound is a new substance formed by chemical reactions occurring between various molecules. For example, carbon and oxygen combine to form carbon dioxide.

2. A compound is always homogeneous whereas a mixture can be homogeneous or heterogeneous.

3. Compounds have a fixed boiling and melting temperature. Whereas, mixtures do not have a definite melting and boiling temperature.

5 0
3 years ago
The abbreviation of the term that means pertaining to the back and to the front is:_________
Burka [1]

Answer:

PA

posteroanterior

Explanation:

3 0
2 years ago
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