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2 years ago

How is mitochondrial DNA (mtDNA) typing used in forensic science?

2 answers:

5 0

MtDNA is a genome inside the mitochondria outside the cell's nucleus
valuable tool used to get the source of dna from small or damaged biological samples <span />

sineoko [7]2 years ago

5 0

Answer:

The crime scene has many evidences which can help to identify the criminal. The DNA sample that is found at the crime scene is matched with the unknown DNA.

This is the method by which the Mitochondrial DNA can be used for knowing the criminal.

The unknown sample of DNA is matched with the sample of DNA after amplification. The amplified sample might match with the sample or might not match with the unknown sample.

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If the nucleotide or base sequence of the dna strand used as a template for messenger rna synthesis is acgtt, then what would be

KATRIN_1 [288]

It is simply the complementary bases to that sequence but change the thymine to Uracil because it is RNA not DNA.

5 0

2 years ago

Describe how temperatures above 35 C most likely affect the structure and function of the starch synthase in the particular stra

arlik [135]

Answer:

- It is very likely that temperatures above 35°C will change the structural configuration of the enzyme, denaturing it and preventing it from performing its function.

- According to the information, the most probable consequences for this rice crop is that its starch content will be lower, compared to crops grown at optimal temperatures.

Explanation:

<u>The full question includes this statement</u>:

<em>A rice grain is a fruit that encloses a seed. Most of the dry mass of a rice grain is starch. In rice plants, starch is produced by hydrolyzing sucrose and then linking the released glucose molecules together into starch . The optimal temperature range for starch synthase activity in a particular strain of rice is 27°C - 30°C. The optimal temperature range for sucrose synthase in the strain is 30°C - 35°C.</em>

One of the factors affecting enzyme activity is temperature, according to which an enzyme can make a reaction faster, slower or inhibit the activity of that enzyme.

For a grain of rice to acquire its starch content, the activity of two enzymes is required, sucrose synthase - to obtain glucose from sucrose - and starch synthase, to polymerize glucose into starch (see image).

<h3>In this case, how temperatures above 35°C most likely affect the structure and function of the starch synthase?</h3>

The temperature of 35°C is far above the optimum temperature required for the enzyme to act, so it is possible that a change in the structure of the enzyme will occur or that it will be denatured, preventing the starch synthase from performing its function. One consequence of this is a lower starch synthesis.

<h3>When the average temperature in the growing season is 33°C, what can be predicted about the consequences on the starch content in mature rice grains?</h3>

A temperature of 33°C is outside the range of starch synthase activity -even though it is optimal for sucrose synthase- which would decrease starch synthesis and, because of this, the rice grains in this crop would have less starch content.

Learn more:

Relationship between the reaction of velocity of an enzyme and temperature brainly.com/question/14198802

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2 years ago

Describe the major differences in acute versus passive range of motion (rom) when distinguishing between an articular and nonart

Ierofanga [76]

The question should be about active vs passive range of motion.

In the active range of motion, the test is done by asking the patient to move their body themselves. In this case, the patient should use their muscle to move their body. If there is a restriction in this examination, it could be caused by the muscles or the joints, or the nervous system that used to contract the muscle.
In the passive range of motion, the test is done by the examiner moving the patient body. Since no muscle used, the test shouldn't be influenced much by the muscle. Then, if there is an articular joint issue, the restriction would be found in both passive and active ROM, but the nonarticular joint issue might only cause abnormality in the active ROM.

3 0

2 years ago

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In all three species of phalarope, a taxon of wading shorebirds, the majority of parental care is provided by the male. based on

Greeley [361]

I would expect to see HIGHER MALE INVESTMENT.
Bateman Triver hypothesis of sexual selection states that males compete with one other and female are choosy in which male to mate with when it comes to sexual reproduction.

4 0

2 years ago

The hormones secretin and cholecystokinin target the pancreas, ________, and ________ to release pancreatic juice and bile into

elixir [45]

Answer: The hormones secretin and cholecystokinin target the pancreas, stomach, and gallbladder.

Explanation:

The duodenum secretes two additional hormones. Cholecystokinin (CCK), like enterogastrone, is secreted in response to the presence of fat in the chyme. CCK stimulates the contractions of the gallbladder, injecting bile into the duodenum so that fat can be emulsified and more efficiently digested. The other duodenal hormone is secretin. Released in response to the acidity of the chyme that arrives in the duodenum, secretin stimulates the pancreas to release bicarbonate, which then neutralizes some of the acidity.

6 0

2 years ago

Read 2 more answers