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levacccp [35]
3 years ago
8

Which of the following is not found in bacteria? Which of the following is not found in bacteria? control of chromatin remodelin

g transcriptional control control of chromatin remodeling, RNA splicing, and transcription control of both RNA splicing and chromatin remodeling control of RNA splicing
Biology
1 answer:
sergij07 [2.7K]3 years ago
3 0

Answer:

Control of both RNA splicing and chromatin remodeling control of RNA splicing.

Explanation:

RNA is present as genetic material but in case of some viruses only. RNA contains the nitrogenous base ( adenine, guanine, uracil and cytosine), oxyribose sugar and phosphate group.

The bacteria do not have well developed nucleus so no chromatin remodification occurs in case of bacteria. Bacteria is devoid of introns and contains only exons in its RNA structure. The splicing process is not required in case of bacteria.

Thus, the correct answer is option (4).

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Which of the following best explains how genetic recombination influences evolution?
Mademuasel [1]

Answer:

The correct option is A. The genetic variation introduced during recombination provides new allelic combinations for natural selection to act upon.

Explanation:

Recombination will lead to more possibilities for allelic combinations. This will result in increase in the number  of genetic variations for a population.. The genetic variations in a population help the organisms to better adapt to different environmental conditions. If genetic variation is low for a population, then there are more chances for the population to become extinct or endangered when disasters occur. Many ecologists blame lack of genetic variation for extinction of different species.

5 0
3 years ago
Scientists use radiometric dating to determine the age of
kherson [118]

Answer: B

Explanation: They are extremely stable types of atoms

6 0
3 years ago
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I'm so confused on how to do punnet squares. help?
lubasha [3.4K]
A brown heterozygous rabbit is an animal hat has two different alleles ("B" & "b" are different. One is capital (dominant), and one is lowercase (recessive). a homozygous white rabbit would be someone who has the same alleles. For example, it could have two capital B's (BB) or two lowercase b's. However since we know white fur is recessive and the rabbit is showing recessive WHITE fur, we would represent it as two little b's.

Let's set up our punnett square by drawing a square or box


Then, divide the box up into four equal squares inside the box.

Now, we are going to put our genotypes (Bb & bb) above the box and on the left side ( as shown in the picture.

You cross them kind of like cross multiplying. Remember, the capital B always comes first when needed.

THERE'S YOUR PUNNETT SQUARE! Let's solve the problems.

1.
Genotype is the genetic code. (Ex: Bb, VV, rr)
Phenotype on the other hand is the physical trait (brown fur, blue eyes, rolling your tounge)

So the genotypes of the new generation are Bb & bb

While the phenotypes are brown fur and white fur. Remember, the dominant trait always covers up the recessive. For example, Bb. The rabbit would take brown fur but could give white fur to her offspring because she has a recessive trait for white fur. However, bb would give the rabbit white fur since there is no dominant trait to cover up the recessive.

2.
50% of the rabbit are going to be brown and 50% of the rabbits are going to be white.

This is because the recessive gene isn't covered up by a dominant trait for 50% of the rabbits (bb) but the other 50% will have brown fur because the dominant trait is covering it up.

Hope that clears everything up about punnett squares. Good luck! (:

4 0
3 years ago
Read 2 more answers
The buildup of lactic acid in muscle cells is caused by
maksim [4K]

Answer:

There's not enough oxygen in the muscles to break down glucose and glycogen

Explanation:

Lactic acid buildup occurs when there's not enough oxygen in the muscles to break down glucose and glycogen. This is called anaerobic metabolism.

learn more here:

https://www.sciencedirect.com/topics/medicine-and-dentistry/anaerobic-metabolism

Hope this helps,

H.M.

8 0
3 years ago
Doctors are seeing an alarming increase in the number of cases of tuberculosis (TB) that is resistant to drugs commonly used to
WARRIOR [948]

Ans.

Tuberculosis (TB) is a bacterial infection that affects mainly respiratory tract and can be transmitted from one to another person through contaminated air. The causative agent of tuberculosis, <em>Mycobacterium tuberculosis</em> has developed resistance against many antibiotics, such as rifampin and isoniazid, which is known as tuberculosis drug resistance.

If a person infected with TB shows drug resistance against some TB drugs, 'doctors should give other TB drugs to that person, even if these drugs show less effect than common drugs'. This is because these drugs can prevent or kill the bacterium more effectively than the common drugs for which, bacterium is resistance.


5 0
3 years ago
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