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1 year ago

Give two reasons why dna evidence analysis is an imperfect science

Biology

1 answer:

Virty [35]1 year ago

7 0

Answer:

DNA samples might be planted and it is possible to synthesize a nucleotide sequence to incriminate a person

Explanation:

In a criminal case, DNA evidence may be considered to be fraudulent because DNA samples might be planted around the crime scene. Moreover, specific genomic profiles of an individual stored in the database can be used to manufacture a DNA sample matching this profile without the necessity to obtain tissues of the person. In consequence, DNA evidence may be considered to be imperfect. Nonetheless, it is important to highlight that DNA evidence is one of the most important modern advances used during criminal trials, and it has proven to be a very useful (and effective) tool available in law enforcement.

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Cellular respiration harvests the most chemical energy from which of the following?

olga55 [171]

Answer: The answer is B

Explanation:

Cellular respiration harvest most chemical energy from converting oxygen to ATP. During cellular respiration, most ATP produced are generated by oxidative phosphorylation , which uses the energy released by redox reactions in the electron transport chain to male ATP. The electrons are finally passed to oxygen which is reduced to water.

3 0

1 year ago

Describe how iron turns into a brownish-red powder. Name the reactants and products that are involved.

Naily [24]

The brownish-red powder on iron is called rust. It is formed by the reaction of iron and oxygen in the presence of water or air moisture. It is called oxidizing or rusting due to exposure to water and air.

The reactants are oxygen and iron the products are carbon dioxide and water and the process is oxidization.

3 0

1 year ago

Read 2 more answers

Two true-breeding stocks of pea plants are crossed. One parent has red, axial flowers, and the other has white, terminal flowers

Debora [2.8K]

Answer:

Explanation:

The probability of producing plants with white axial flowers would be 1/16.

From the illustration, All F1 individuals had red, axial flowers. It thus means that red and axial genes are dominant over white and terminal genes in the pea plant.

Let us assume that the allele for flower color is A (red) and a (white); and the allele for flower location is B (axial) and b (terminal).

Pure-breeding red, axial flower = AABB

Pure breeding white, terminal flower = aabb

AABB x aabb

F1 genotype = AaBb - all red and axial

At F2:

AaBb x AaBb

Progeny

9 A_B_ red/axial

3 A_bb red/terminal

3 aaB_ white/axial

1 aabb - white/terminal

Hence, the probability of producing plants with white axial flowers in the F2 generation is 1/16.

8 0

1 year ago

When potatoes are in the ground, do they swell when it rains?

NemiM [27]

Potatoes do not swell when it rains. When it rains the potatoes absorbs water mostly through its roots.

7 0

2 years ago

Read 2 more answers

Tasha is testing the effect of blue-colored light on the growth of tomato plants. Which is the independent variable in this expe

tester [92]

Answer:

the answer to this question is the light colour

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1 year ago