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kvasek [131]
3 years ago
14

Give two reasons why dna evidence analysis is an imperfect science

Biology
1 answer:
Virty [35]3 years 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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En las clases de ciencias estan hablando de varios movimientos que presentan las plantas debido a estimulos de ambiente, Pedro p
marin [14]

Answer:

En resultados

Explanation:

El experimento se basa en analizar el movimiento de la planta en respuesta a la luz solar, desde distintas posiciones:

  • planta parada
  • planta semiacostada
  • planta acostada

Durante su experimento, Pedro debe ir registrando los movimientos que observa en las distintas plantas a medida que recibe la luz del sol. El registro de dichos movimientos ante el estímulo forma parte de los resultados.

- Objetivo o propósito del trabajo: analizar la influencia de la luz solar como estimulo para generar un movimiento en plantas desde distintas posiciones.

- Procedimiento: Ubicación de plantas en distintas posiciones y bajo las mismas condiciones ambientales. Exposición de todas las plantas a la misma cantidad de radiación solar. Observación del movimiento durante un periodo de tiempo determinado.

- Resultados: Registro del movimiento de cada planta en cada posición durante el periodo de tiempo que fueron expuestas a radiación. En esta instancia de vuelca en tablas o gráficos, o se describe qué fué lo que se observó durante el experimento. Cuál fue la respuesta de cada una de las plantas.

- Conclusión: Relación entre lo esperado y lo observado. Comparación con otros trabajos similares.  

7 0
2 years ago
On average, activated yeast cells divide once every 120 minutes; that is, each individual cell divides into two individual cells
astra-53 [7]

Answer:

The correct answer is 4,960,000

Explanation:

If a yeast cell divides into two yeast cells in 120 minutes that means a yeast cell needs 2 hours to get double. So according to the question 2 hours ago a yeast colony consisted of 310,000 cells that means the present colony should have 620,000 cells.

So after six hours from now, this population will divide three times in six hours because the generation time of yeast cell is 2 hour and each time the number of cells will double.

Therefore, in first time the number will increase to 1,240,000(620000*2), the second time the number will increase to 2,480,000(1240000*2) and after final division, the number will be 4,960,000(2480000*2).

Therefore after 6 hours from now, the approximate number of yeast cells will be 4,960,000.

3 0
3 years ago
Why does the ocean impact the weather more than the areas over the continents
Ulleksa [173]
Water is more of a radical it brings moisture and it has great power in its surf clouds are made from the moisture water is like a power sorce for storms and other things
3 0
3 years ago
Axons from mPFC neurons synapse onto intercalated cells in the amygdala that contain the neurotransmitter __________.
sammy [17]

The medial pre Frontal Cortex neurons synapting with the intercalated cells of Amygdala contains <u>GABA</u> as the neurotransmitter.

Option a

<u>Explanation:</u>

The Amygdala has two types of nerve cells getting attached with it primarily. They are the fibres from the mPFC or medial pre Frontal Cortex and the vIPAG or ventrolateral periaqueductal grey. These neurons do have different functions on the whole body.

The fibres from the mPFC do have emotional function on the human body whereas the fibres of vIPAG do have an effect on the muscle tone . And it's seen that both the nerve fibres that are getting attached with the intercalated cells of Amygdala do secrete GABA and are inhibitory GAB Anergic in nature.

8 0
2 years ago
During human fertilization, an egg and a sperm cell unite. which structures in these cells carry the genes that will be transfer
ArbitrLikvidat [17]

Answer: C. Chromosomes

When an egg and sperm cell unite, fertilization follows. The chromosomes carry the genes that will be transferred to the offspring. They have threadlike bodies that made up of DNA and protein that carries hereditary information, which is used to help a cell grow and reproduce.

Furthermore, humans have 46 chromosomes and 23 in each sex cell and they are found in the nucleus of a cell.

 

5 0
3 years ago
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