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3 years ago

Which DNA fingering technique examines the length variation of DNA repeat sequences in human DNA?

Biology

1 answer:

DiKsa [7]3 years ago

5 0

Answer: The question is incorrect, below is the correct question

Which DNA FINGERPRINTING technique examines the length variation of DNA repeat sequences in human DNA?

The correct answer to the question is option D

mtDNA (mitochondrial DNA) analysis

Explanation: DNA fingerprinting technique is a laboratory technique used by geneticists.it entails placing of DNA samples into wells,these wells are then placed in a slab of gels and thereafter passing a current through the gel.This is done to ascertain the uniqueness of a DNA pattern and thus be able to differentiate people of same species.

There are several methods of DNA fingerprinting as outlined in the options given with the question.

In mtDNA (mitochondrial DNA) analysis,The Genetic samples are extracted from the biological materials, these samples extracted are total genomic DNA like hair,tooth or samples of blood, Several copies of these genomic DNA are then produced using a polymerase chain reaction and flanking primers inorder to examines the length variation of DNA repeat sequences in human DNA.

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The half-life of silicon-32 is 710 years. If 70 grams is present now, how much will be present in 200 years? (Round your answer

elena-s [515]

Answer:

$57.7$ grams

Explanation:

Given -

Half life of the silicon-32 $= 710$ years

Half life means the time period required by a radioactive element to reduce its mass by half.

Radioactive decay formula is

$A = A_o*2^{\frac{-t}{h} }$

Where

A represents the amount of radioactive element after time t years

$A_0$ represents the initial amount of radioactive element

$t =$ time of decay

$h =$ half-life of the substance

Substituting the given values in above equation, we get -

$A = 70 * 2^{\frac{200}{710} \\$

$A = 57.7$ grams

6 0

4 years ago

Energy is transferred between the atmosphere and hydrosphere by which two processes?

Dafna1 [17]

The answer is condensation and evaporation.

4 0

4 years ago

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Compare and contrast the events of light reaction and dark reaction in the photosynthesis process

Marat540 [252]

Answer:

The light reaction is the initial stage of photosynthesis which traps light energy to produce ATP and NADPH, whereas dark reaction is the second step of photosynthesis which utilizes the energy from ATP and NADPH to produce glucose.

Explanation:

hope it helps

5 0

3 years ago

Please help me!!!!!!!!

KiRa [710]

Answer:

the answer would be d. tt

Explanation:

3 0

3 years ago

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Where does nad+ deliver electrons compared to fad in cellular respiration?

Anna71 [15]

Answer:

The correct answer would be "NADH delivers its electrons to complex I and FADH₂ deliver its electrons to complex II" in cellular respiration.

There are mainly four complexes associated with electron transport chain of cellular respiration.

Complex I or NADH: ubiquinone oxidoreductase is the complex at which NADH is oxidized to form NAD⁺. The free electrons are transported with the help of ubiquinone.

Complex II or succinate dehydrogenase is the complex associated with oxidation of FADH₂ to FAD⁺. It also transports the free electrons with the help of the ubiquinone pool.

Complex III or cytochrome bc1 complex transport free electrons from ubiquinone to the cytochrome C which is a water-soluble electron carrier.

Complex IV or cytochrome c oxidase transport the free electrons to oxygen to form water.

7 0

3 years ago