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nlexa [21]
3 years ago
10

What does stratigraphy measure?

Biology
2 answers:
bezimeni [28]3 years ago
8 0
It measures the amounts of chemicals in certain substances
pav-90 [236]3 years ago
7 0
Stratigraphy<span> is a branch of geology which studies rock layers (strata) and layering (stratification). It is primarily used in the study of sedimentary and layered volcanic rocks.
Hope this helps~!
~Mistermistyeyed.</span>
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You have identified two mutants with same phenotype.
algol13

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.

7 0
3 years ago
Hey there! I was wondering if someone could explain what the integumentary muscles do in the body!
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It consists of skin, hair, nails, and glands. The skin protects the body from the environment on the outside. It also functions to retain body fluids, protect against disease, eliminate waste products, and regulate body temperature. It also helps store fat and water.
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8 0
3 years ago
During DNA replication, two extra guanine bases are added to the DNA. What type of mutation is this?
Arada [10]

Answer:

Mutations are permanent changes in the DNA due to changes in nucleotide sequences. Mutations that cause addition of extra nucleotides in a nucleotide sequences are known as frameshift mutations

7 0
2 years ago
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Rock that is trapped in the orbit of the sun?
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Is the answer the moon?
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Why are animal rights important
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Animal rights are important because animals at living creatures just like humans.

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