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Sveta_85 [38]
1 year ago
5

When does the WHO declare a pandemic influenza?

Biology
1 answer:
likoan [24]1 year ago
6 0

Answer:

Three influenza pandemics occurred during the 20th century: the 1918-19 “Spanish flu,” the 1957-58 “Asian flu,” and the 1968-69 pandemic or “Hong Kong flu.” In 2009, the World Health Organization (WHO) declared a global pandemic of H1N1 flu.

Explanation:

Hope this helps! :>

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Which of the following is not common to both prokaryotic and eukaryotic cell division?
julsineya [31]

The correct answer is: A checkpoint will be activated if the spindle does not attach to a kinetochore.

Prokaryotes, do not undergo mitosis (like eukaryotes) and therefore have no need for a mitotic spindle. Prokaryotes also don’ t have checkpoints foor the regulation of cell division.

Normal eukaryotic cells (unlike cancer cells), move through the cell cycle in a regulated way in order to make sure that cells don't divide under conditions that are unfavorable for them. Information about their own internal state (nutrients, signal molecules, DNA integrity) is signal to go or not to go through the cell division. Because of that there are few checkpoints in the cell cycle at which the cell examines the signals and makes a “decision”. The major checkpoints are:

• The G1- the first point at which it must choose, once it passes the G1 checkpoint the cell enters S phase

• The G2-the cell checks DNA integrity and checks if replication is done well.

• The spindle checkpoint-at the transition from metaphase to anaphase.

3 0
3 years ago
Read 2 more answers
While receiving a blood transfusion, the client suddenly shouts, "i feel like someone is lowering a heavy weight on my chest. i
lesya [120]
<span>Of course feeling like you are going to die is probably the most important priority. Although a heavy weight on your chest can be a dangerous and critical symptom, it still is not as critical as feeling like you are going to die.</span>
4 0
2 years ago
If purple skin - P is dominant to red skin - p. What is the genotype for someone with red skin? *
AysviL [449]

Answer:

<h3><em><u>Every genotypic combination with DD or Dd is classified as Rh Positive (red).</u></em></h3>

Explanation:

<h3><u><em>It may be because extra blood rushes to the skin's surface to fight off irritants and encourage healing. Your skin can also become red from exertion, such as after a heart-pounding exercise session.</em></u></h3><h3><u><em></em></u></h3><h3><em>This is just an explanation of why there skin might turn red.</em></h3><h3 /><h3>                                        <u>Hope this helps! </u></h3>
3 0
3 years ago
Read 2 more answers
Scientists interested in the relationship among vision, foraging for food, and fitness studied three isolated populations of a s
Y_Kistochka [10]

a) Evolutionary fitness can be characterized as a person's commitment to the cutting edge's quality pool,which is chiefly founded on the aggregate or the genotype of the individual.This principally identifies with the conceptive achievement of an organic entity.  

It is fundamentally determined by the offspring that can endure and pass on the characteristics/traits.

b) Graph is already uploaded in the below attached document.  

c) The population 3 will have the most elevated frequency of heterozygotes,45% of the complete population.  

d) Since population 2 is as of now having a low number of heterozygotes, the occasion would totally eliminate them from the population or decreases their number

Explanation:

Frequency of animals in population 1 having both alleles 1 and 3

frequency of allele 1 =0.60

frequency of allele 3= 0.25

Frequency of both allele 1 and 3 would be allele 1 + allele 3 frequency x 100

= 0.60+0.25 X 100= 85%

3 0
3 years ago
All of the following are separated for petroleum except
LUCKY_DIMON [66]
Lignite. It’s a formation of coal.
6 0
3 years ago
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