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Katarina [22]
3 years ago
13

The purpose of "crossing over" is

Biology
1 answer:
Gennadij [26K]3 years ago
5 0
Crossing over is a process that happens between homologous chromosomes in order to increase genetic diversity. During crossing over, part of one chromosome is exchanged with another. The result is a hybrid chromosome with a unique pattern of genetic material.
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Serggg [28]

Answer:

Explanation:

I think it b c d sorry if wrong

3 0
3 years ago
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The clear, colorless fluid that surrounds cells and protein fibers in connective tissues is called _____.
Aliun [14]
The clear and colourless fluid that surrounds cells and protein fibres in connective tissues is called Ground substance
5 0
3 years ago
Which of the following is NOT the result of a mutation in the DNA sequence of an organism?
Mama L [17]

DNA is copied during mitosis and when the two resulting copies of DNA are compared they are found to contain the same order of nucleotides is not the result of mutation in the DNA sequence of an organism.

Explanation:

Mutation is the process

It is caused by certain chemicals called mutagens or by environmental factors.

In mutation the nucleotide get change which eventually changes the protein product.

In  mutation purine base gets mutated to purine base and pyrimidine base gets mutated to pyrimidine only.

A single change in nucleotide is called point mutation and the effect occurring because of it is called frame shift mutations.

In S phase there are checkpoints which ensure that DNA replication is accurate and when mitosis follows it equal distribution of DNA takes place between the two daughter cells hence no mutation will takes place.

6 0
3 years ago
The brilliant research scientist, Professor "Iron-Mike" Scrawll is studying a new pore-forming toxin from the pathogenic bacteri
Dafna11 [192]

Answer:

The correct option is C - Professor Scrawll applied 100 nM BurD to the cells for 24 hours, while Dr. Bogey applied 1 nM BurD to the cells for 12 hours.

Explanation:

The correct option is C - Professor Scrawll applied 100 nM BurD to the cells for 24 hours, while Dr. Bogey applied 1 nM BurD to the cells for 12 hours.

As the exotoxin, BurD is very stable and lyse the ankle cells very quickly, more concentration and more time of action should only lyse the cells. Perhaps Dr.Bogey's ankle cells were not lysed because the concentration she used was only 1nM compared to the 100nM concentration used by Dr. Scrawll, and the time period of incubation was only 12 hours compared to the 24 hours used by Dr. Scrawll.

Considering the other explanations given in the remaining options, the concentration and time of incubation used by Dr. Bogey are more than that used by Dr. Scrawll which should only have possibly lysed the cells. Moreover, contamination with bleach also should have only lysed the cells.

5 0
3 years ago
Inflammation can be local or systemic. what are the most prominent systemic manifestations of inflammation? mark all that apply.
Lady bird [3.3K]
The most prominent systemic manifestations of inflammation include the following:

- The acute-phase reaction, modifications in WBC count and fever.

- The liver rises the synthesis of acute-phase proteins such as Fibrinogen, C-reactive protein (CRP) and serum amyloid A protein (SAA) that all serve unalike defense functions. 

- Increase in WBC count. Normal is 4-10. 

- Sepsis can take place.
7 0
3 years ago
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