1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
maxonik [38]
3 years ago
10

A scientist has a very small sample of DNA. To analyze the DNA, which would be the MOST USEFUL first step for the scientist to f

ollow?
A. Use restriction enzymes to make multiple copies of the DNA.
B. Use the polymerase chain reaction (PCR) to make multiple copies of the DNA.
C. Transfer the DNA into bacteria, and allow the bacteria to be replicated many times.
D. Use restriction enzymes to cut the DNA into many small pieces.
Biology
1 answer:
Karo-lina-s [1.5K]3 years ago
5 0

Answer:

B. Use the polymerase chain reaction (PCR) to make multiple copies of the DNA.

Explanation:

The scientist is to analyze a small sample of DNA, the most useful step to start this would be first the use of polymerase chain reaction to make various copies of that DNA sample. PCR is essential and quick process that gives a lot of copies within few hours. It uses the sample or target DNA, according to which the primers are designed. Taq polymerase and DNA polymerase are also used in the process, it consist of various cycles in which copies are made. There are three basic steps 'Denaturation', 'annealing', and 'extension'.

You might be interested in
A failure to steer a car correctly is classified as a __________ .
Naily [24]
The answer is B.Performance error

Hope i helped :)))
7 0
3 years ago
Read 2 more answers
A plant breeder has determined the following variances for yield of corn in his fields:
Law Incorporation [45]

Answer:

A. VG = 80

B. Broad sense heritability = 0.80

C. Narrow sense heritability = 0.30

D. Average yield = 430 Units

Explanation:

A. Given that

VA = 30

VD = 50

VI = assumed not available

Therefore

Total genetic variance (VG) = VA + VD

= 30 + 50

= 80

VG = 80

B. Given that

VP = 100

VG = 80

Broad sense heritability, H2 = VG/VP

= 80/100

= 0.80

C. Given that

VA = 30

VP = 100

Narrow sense heritability, h2 = VA/VP

=30/100

= 0.30

D. The difference in selection = 500 - 400

= 100

Recall,

Selection response is heritability multiplied by selection differential.

That is

R = h2S

Selection differential = 100

Heritability h2 = 0.30

Selection response = 0.30 × 100

= 30units

Therefore, expected average yield = 400 + 30

= 430 Units

6 0
3 years ago
1. Nomenclature is governed by certain universal rules. Which one of the following is contrary to the rules of nomenclature? ​
jeka94

»» (c) Biological names can be written in any language.

<h3>EXPLANATION:</h3>

➱ Biological names are derived either from Latin language or are latinised. This is because Latin language is a dead language and therefore it will not change in form or spellings with the passage of time.

3 0
2 years ago
Consulte los tres avances cientificos mas importantes,a traves,de la historia para la humanidad y el por que
tino4ka555 [31]

La respuesta correcta para esta pregunta abierta es la siguiente.

Los tres avances científicos más importantes, a través de la historia para la humanidad son los siguientes.

1.- El descubrimiento de la penicilina.

El científico Inglés Alexander Fleming fue el descubridor de la penicilina en septiembre de 1928. Este descubrimiento revolucionó la historia de la humanidad.. Antes, millones de personas morían debido a las infecciones en el cuerpo humano. La penicilina resultó ser el antibiótico más efectivo descubierto hasta el día de hoy y ha salvado millones de vidas humanas desde su descubrimiento.

2.- El descubrimiento de la electricidad.

¿Te puedes imaginar un día de tu vida sin luz?

Bueno, pues así vivió la gente toda la vida hasta el siglo XVIII, cuando comenzó a entenderse y desarrollar mejores maneras de producir electricidad. Prácticamente todos los aparatos electrodomésticos, de laboratorio, hospitales, en oficinas, escuelas y demás, funcionan con electricidad. Sin ella, nuestra vida no habría producido los avances que conocemos el día de hoy.

3.- El internet.

La revolución de este siglo.

El internet nos mantiene conectados todo el tiempo a cualquier parte del mundo. Con el internet podemos hacer miles de cosas desde nuestras computadoras y teléfonos celulares, que hasta hace 15 años eran inimaginable.

3 0
2 years ago
Select the correct answer.
damaskus [11]

Answer:

OB هخشسؤةةحؤةىشؤحىشؤتىشكنؤىتنؤمشؤىشتؤىسشتؤلااؤ

4 0
2 years ago
Other questions:
  • What are the two parts of respiratory system and their parts?
    13·1 answer
  • • What is the Doppler Effect? How can the Doppler Effect be useful for a forensic investigation involving a shooting? • If you f
    8·2 answers
  • _____consists of 6 different dimensions-physical, emotional, intellectual, spiritual, social, and environmental. A. Health B. We
    8·2 answers
  • Forests help to regulate the global climate by
    15·1 answer
  • [Quick][easy question]
    14·2 answers
  • Please Help Me!!!
    12·1 answer
  • Does anyone know where( internet ) i can find hard biology exam questions? (photosynthesis)
    9·1 answer
  • The nucleus of an atom comprises of _______________ and _______________
    11·2 answers
  • A certain lake has a volume of about 480 m³. If the total population of freshwater shrimp in the lake is 600 million, what is th
    5·1 answer
  • ATP is a special____, and is the energy "currency" of the cell.A) nucleic acidB) carbohydratesC) lipidD) protein
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!