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Schach [20]
4 years ago
13

I need help with homework

Biology
1 answer:
Amiraneli [1.4K]4 years ago
5 0
The pic is very blurry try taking a pic of it with an iphone
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Please explain the difference between a frameshift mutation and a base substitution mutation.
harina [27]

Answer:

A frameshift changes every codon past it. A base substitution only changes one codon.

Explanation:

DNA is comprised of nucleotides (A, C, T, G) that make up amino acids. Every three bases is called a codon and represents an amino acid.

In a frameshift mutation, a nucleotide is either added or deleted from the sequence. This offsets the entire sequence after it because the reading frame shifts. Here's an example:

ACTGCTATCGTCATC

If another T is added in between the first and second codons, then every codon after will be changed.

ACT>T<GCTATCGTCATC

A substitution mutation is usually less severe, as it only alters one codon in the sequence. These occur when one nucleotide is replaced by another one. Here's an example:

ACTGCTATCGTCATC

Let's say the first G is replaced by a T.

ACT>T<CTATCGTCATC

As you can see, none of the other codons changed.

Typically, a frameshift mutation is considered worse than a substitution mutation.

7 0
3 years ago
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Describe the relationship between your skeletal muscles and your bones.
OlgaM077 [116]
Bones don't work alone — they need help from the muscles and joints.Muscles pull on the joints, allowing us to move. They also help the body perform other functions so we can grow and remain strong, such as chewing food and then moving it through the digestive system.
7 0
3 years ago
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Name the fluid present between arachnoid and pia mater<br>​
jolli1 [7]

Answer:

Cerebrospinal fluid fills the ventricles of the brain and the space between the pia mater and the arachnoid.

Explanation:

6 0
3 years ago
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Through the process of photosynthesis, plants remove carbon dioxide from the air, while producing oxygen and sugar. In space, pl
KIM [24]
The biggest issue would probably be number I. The other concerns (II, III, IV, V) would probably be easy to solve with the some specific chamber characteristics.
The fact that the moon has no atmosphere it means that it doesn't retain neither CO_{2} nor O_{2}. Even with the appropriate chamber characteristics to retain such gases, how would the crop in the first place have so much free CO_{2} to use.
Temperature could be managed inside the chamber as well as accelaration. The period of day light would be long and intense. As for the water, once plants evaporate water when they breath at night (instead of doing photosynthesis), that water could be all collected and condensed by the chamber to be used again during the day light period.
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3 years ago
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List the four major types of organic compounds
n200080 [17]
Carbohydrates, lipids, proteins, and nucleotides
yww lol
6 0
2 years ago
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