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vladimir2022 [97]
3 years ago
10

Conjugation occurs when abacterium acquires dna from the surrounding environment occurs when a phage transfers bacterial dna fro

m one bacterium to another
Biology
1 answer:
Marta_Voda [28]3 years ago
6 0
Conjugation is when genetic material is transferred from one bacteria to another via direct contact. Neither of these options are completely correct, but the more correct one would be the first. 
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Over 1,800 mutations have been described within the CFTR gene. These mutations can be readily detected using PCR and DNA sequenc
sertanlavr [38]

Answer:

The correct answer is - option C.

Explanation:

CFTR is a short form of cystic fibrosis transmembrane conductance regulator protein which is caused by a recessive mutation in this protein. This mutation results in the accumulation of mucus in secretory organs.

As the disease is a recessive disease, for the mutant phenotype to expressed both copies of the allele required to be recessive.

The mother is negative for the CFTR. Hence, she will not transfer the mutant allele to her child So, the child would have a wild-type phenotype even if the father having two copies of recessive allele.

Thus, the correct answer is - option C.

8 0
3 years ago
A scientist could best determine which ion (F-, Cl-, Br-, or I-) produced the greatest electrical potential in the Experiment by
Serggg [28]

Answer:

a solution of each sodium salt at the same concentration

Explanation:

If a scientist wishes to study the electrical potential that develops between ice  and the sodium salts solution of the ions (F-, Cl-, Br-, or I-) in order to determine which ion produced the greatest electrical potential; he must compare the electrical potential that develops between ice and a solution of each sodium salt at the same concentration.

This means that conclusions can not be reached unless the sodium salt of each ion at the same concentration is compared so as to ensure consistence in the results of the study.

6 0
2 years ago
Which of the following types of organism fossils have been found to have an annual growth pattern that can be used to determine
givi [52]
I believe the answer is fish vertebrates. i hope this helped
7 0
3 years ago
What is the function of the sinoatrial node?
Aleks04 [339]
Since the other answer got deleted, i'll just answer it for you.

a sinoatrial node is the main pacemaker that begins each heartbeat located in the junctions of superior vena cava and the right atrium. It signals from the node that spread through the atria and determines the heart rates.
5 0
3 years ago
After a major fire, grasses that are pioneer species start to grow in the ashy soil. The following list includes some of the way
Ierofanga [76]

Answer:

Providing food for animals

8 0
3 years ago
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