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vodomira [7]
1 year ago
7

The genetic recombination of ________ caused massive, widespread epidemics that affected the global human population several tim

es in the twentieth century.
Biology
1 answer:
lukranit [14]1 year ago
7 0

The genetic recombination of human influenza A caused massive, widespread epidemics that affected the global human population several times in the twentieth century.

<h3>What is influenza ?</h3>

Influenza is a disease caused by virus which is contagious.It is different from a normal cold as it shows severe symptoms than flu.

Influenza is caused by influenza virus and people get infected when they breathe in tiny airborne droplets from the cough or sneezes of infected person.

Outbreaks of influenza A virus occurred in twentieth century.During 1918 influenza pandemic was the most dangerous pandemic.

Therefore, the genetic recombination of human influenza A caused massive, widespread epidemics that affected the global human population several times in the twentieth century.

Learn more about influenza here:

brainly.com/question/27776447

#SPJ4

You might be interested in
Higher Ultra-Processed Food Consumption Is Associated with Increased Risk of Incident Coronary Artery Disease in the Atheroscler
Eddi Din [679]

Yes, it is true that Higher Ultra-Processed Food Consumption Is Associated with Increased Risk of Incident Coronary Artery Disease in the Atherosclerosis Risk in Communities Study.

Objectives:

To test the hypothesis that higher intake of ultra-processed foods is associated with higher risk of coronary artery disease.

Methods:

A total of 13,548 adults aged 45-65 y from the Atherosclerosis Risk in Communities study were included in the analytic sample. Dietary intake data were collected through a 66-item FFQ.

Ultra-processed foods were defined using the NOVA classification, and the level of intake (servings/d) was calculated for each participant and divided into quartiles.

We used Cox proportional hazards models and restricted cubic splines to assess the association between quartiles of ultra-processed food intake and incident coronary artery disease.

Results:

There were 2006 incident coronary artery disease cases documented over a median follow-up of 27 y.

Incidence rates were higher in the highest quartile of ultra-processed food intake (70.8 per 10,000 person-y; 95% CI: 65.1, 77.1) compared with the lowest quartile (59.3 per 10,000 person-y; 95% CI: 54.1, 65.0).

Participants in the highest compared with lowest quartile of ultra-processed food intake had a 19% higher risk of coronary artery disease (HR: 1.19; 95% CI: 1.05, 1.35) after adjusting for sociodemographic factors and health behaviours. An approximately linear relation was observed between ultra-processed food intake and risk of coronary artery disease.

Conclusions:

Higher ultra-processed food intake was associated with a higher risk of coronary artery disease among middle-aged US adults. Further prospective studies are needed to confirm these findings and to investigate the mechanisms by which ultra-processed foods may affect health.

Learn more about ultra-processed foods is here : brainly.com/question/26511562

#SPJ4

3 0
2 years ago
What is the purpose of determining the melting point for the crude and recrystallized aspirin?
shtirl [24]
To make a compound more stable at storage temperature.
5 0
3 years ago
Compare mitosis with meiosis by filling in the chart below:
Elena-2011 [213]

Answer:

22:- in mitosis stem cells and somatic cells cell division occurs and in meoisis germ cells cell division occurs

23:- at end of mitosis 2 daughter cells formed and meiosis 4 daughter cells formed

24:- in mitosis cells are same and in meiosis cells are different

l know only those questions answers

3 0
3 years ago
Please help asap!!! Will give 30 points and brainlist
grigory [225]

Answer:

Apple tree and grass are producers, mushroom and bacteria are decomposers, and everything else are consumers. The bear is herbivore I believe, the rabbit is as well to my understanding. The pig is omnivore and lion is carnivore.

Explanation:

Starting with producers, most plants are producers. They photosynthesize to make their own food (glucose). Decomposers break things down like dead animals. Carnivores eat only meat, which is what a lion does. It eats no plants. The pig is an omnivore, meaning that it eats both meat AND plants. Lastly, the bear and rabbit are herbivores meaning that they only eat plants. I always remember it as "HERBivore which sounds like HERBS which are plants" Hope this helps!

5 0
3 years ago
Why can the same trna and rrna molecules be used to synthesize a wide variety of polypeptides
Drupady [299]

Answer: The transcription and translation process allows trna and rrna molecules to be used to synthesize wide variety of polypeptides.

Explanation:

DNA molecule is made up of information for coding proteins. This information is passed on the mRNA during a process known as transcription. Transcription is the first of many steps of DNA based gene expression in which a part of the segment of DNA is copied into RNA (especially mRNA) by the enzyme RNA polymerase.

Both DNA and RNA are nucleic acids, which use base pairs of nucleotides as a complementary language. During the process of transcription, a DNA sequence is read by an RNA polymerase, which gives a complementary, antiparallel RNA strand referred to as a primary transcript.

A large diversity among genes is followed by a large amount of various mRNA molecules. However, the ribosomes consist of rRNA, which is included in the process of translation. Translation is the process whereby ribosomes in the cytoplasm or ER synthesize proteins after the process of transcription of DNA to RNA in the cell's nucleus. The overall process is called gene expression.

The smallest of the three types of RNA is tRNA, which has only 75 to 95 nucleotides and has a role in bringing particular amino acids to the growing polypeptide. It can be concluded that mRNA contribute to the diversity of polypeptide molecules due to the fact that it carries an information about their synthesis.

8 0
3 years ago
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