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NISA [10]
3 years ago
15

The generation of a knock-out organism generally requires all the following EXCEPT ________. The generation of a knock-out organ

ism generally requires all the following EXCEPT ________. knowledge of the sequence product embryonic stem cells knowledge of the target sequence a targeting vector
Biology
1 answer:
PilotLPTM [1.2K]3 years ago
8 0

Answer:

knowledge of the sequence product

Explanation:

A gene knockout is a technique used in molecular genetics to deactivate target genes in an organism in order to study their functions by reverse genetics (i.e., gene loss). Knockouts are generated by different methods including, for example, homologous recombination or site-specific nucleases (zinc-fingers, TALENS, CRISPR/Cas9). These techniques require to know a priori the sequence of each gene to be knocked out in order to target desired mutations. In the last years, the CRISPR/Cas9 tool has gained attention to knockout genes of interest because it is a genome editing system that can be easily used for deletion or insertion of bases.

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2)
Rashid [163]

900J

Explanation:

Given parameters:

Specific heat of the aluminium = 900Jkg⁻¹K⁻¹

Mass of aluminium = 0.5kg

temperature change = 2K

Unknown:

Quantity of heat = ?

Solution:

The quantity of heat a body absorbs to cause a change in temperature is given as:

  H  = mcΘ

H is the quantity of heat

m is the mass of the substance

c is the specific heat capacity

Θ is the temperature change

 

   H = 0.5 x 2 x 900 = 900J

learn more;

Specific heat brainly.com/question/7210400

#learnwithbrainly

3 0
4 years ago
Suppose we have one true-breeding strain of tomato that produces red fruit. Suppose we also have a true-breeding strain of tomat
harina [27]

Answer:

1/4 or 25%

Explanation:

Let us assume that the fruit color trait in the tomato is represented by R and r. The dominant color red would be represented by R while the recessive color yellow would r.

If a true-breeding red fruit tomato (RR) is crossed with a true-breeding yellow fruit tomato (rr), the F1 would be thus:

             RR    x    rr

          Rr   Rr   Rr   Rr

Since R is dominant over r, all the F1 offspring would produce red fruits with the genotype Rr.

At F2:

               Rr    x    Rr

           RR   Rr   Rr   rr

RR and Rr = red

rr = yellow

<em>Hence, the proportion of the F2 offspring expected to be yellow would be </em><em>1/4</em><em> or</em><em> 25%</em><em>.</em>

<em />

3 0
3 years ago
G1-S-G2, which part of the cell cycle control the repair of damage DNA which,if unsuccessful,eventually results in the the abnor
babunello [35]

Answer:

G2 phase

Explanation:

The G2 phase is the phase that comes before the actual cell division. At this point, the cell is checked for damage or deficiencies. If there are any problems in the cell that cannot be fixed, the cell cycle is stopped here. This process prevents defective cells from replicating which often results in cancer.

7 0
4 years ago
Asexual reproduction is used by all organisms including humans.<br> a. true<br> b. false
sashaice [31]
This statement is true

7 0
3 years ago
This macromolecule contains twice as much hydrogen as oxygen
Anon25 [30]

The answer to your question is,

A- Starch

-Mabel <3

8 0
3 years ago
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