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sergeinik [125]
3 years ago
5

DNA evidence analysis is an imperfect science. Provide two reasons why this may be the case.

Biology
1 answer:
iris [78.8K]3 years ago
7 0

Answer:

Not all DNA that was found at the scene has to be related to the scene.

Explanation:

Just because DNA was found at the scene, that doesn't mean that the person there is actually guilty. For example, in a case where person B is guilty, a strand of hair from Person A could be carried over to another scene on Persons B's clothing.

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What result allowed Dintzis to conclude that proteins are synthesized from the N terminus to C terminus
iren2701 [21]

Answer:

The more newly synthesized peptides had greater levels of radiolabeled H

Explanation:

Using immature red blood cells (reticulocytes), Dintzis showed that polypeptide chains of hemoglobin were created from N-terminal to the C terminus during translation. Dintzis labeled with radioactive amino acids that were being actively translated, subsequently digested the translated proteins with trypsin and finally determined the amount of tryptic protein fragments. From this experiment, Dintzis observed that the radioactive products were concentrated in the C-terminus (i.e., labeled amino acids appeared first in the C terminal tryptic peptides), thereby showing that the direction of protein synthesis is from the N terminus to the C terminus.

4 0
3 years ago
At what ph is enzyme A working at its maximum rate
crimeas [40]
Enzymes are also known as  Biological catalysts. An enzyme working at its maximum possible rate, where the substrate concentration is in excess is <span>V max.

</span><span>The reaction is slow because the molecules are moving slowly and they will not often collide with the active site of an enzyme, so the binding of an enzyme and substrate is rare.</span>
5 0
3 years ago
NP plants purple flowers are dominant to white flowers a white flowered plant across with a plant that’s is heterozygous for the
anygoal [31]

Mendel concluded that pea traits like flower color were determined by separate units. From the results, Mendel proved that all traits do not blend. For instance, purple flowers mixed with white flowers did not produce pink flowers.

Since all of the offspring have the purple phenotype, this tells us that the purple allele is dominant to the white allele. ... This means that 75% of the offspring displayed the dominant phenotype of purple flowers, and 25% displayed the recessive phenotype of white flowers.

Two pea plants, both heterozygous for flower color, are crossed. The offspring will show the dominant purple coloration in a 3:1 ratio. Or, about 75% of the offspring will be purple.

Mendel's Results

Mendel noted the ratio of white flowered plants to purple-flowered plants was about 3:1. That is, for every three purple-flowered plants, there was one white flowered plant.

3 0
3 years ago
A water molecule is polar because there is an uneven distribution of _______________ between the oxygen and the hydrogen atoms.
Katen [24]
There is an uneven distribution of electrons between oxygen & hydrogen atoms
7 0
3 years ago
Put these greenhouse effect events in order starting with light's origin: A.Earth radiates longwave radiation. B.Incident longwa
tiny-mole [99]

Answer:

Sun emits energy(light and heat) towards the earth

Incident long-wave radiation is blocked

Visible and shortwave radiation heat the earth

Earth radiates long wave radiation

Long-wave radiation is blocked and heats Earth.

hope that helps

Explanation:

7 0
3 years ago
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