Answer:
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Explanation:
Tree pollen is a common hay fever trigger. It’s the first pollen to be released during hay fever season, and levels are typically highest from late March to mid-May.
Around 95% of people’s hay fever is triggered by grass pollen, which tends to be highest between mid-May and July. In fact, there’s strong evidence that when grass pollen levels are high, people with asthma are more likely to need hospital treatment.
Hay fever can also be triggered by weed pollen, which is highest from the end of June until September.
Know your pollen triggers
You can be allergic to more than one kind of pollen across the year. Different pollens are released at different times, but our changeable weather makes it hard to predict exactly when. If you have hay fever symptoms all year round you might have non-allergic rhinitis.
If you regularly get hay fever and take antihistamines, start taking them up to four weeks before you normally get symptoms. Starting them early means that when pollen starts being released, the medication has already built up in your bloodstream so you may be less likely to react.
If you usually use a steroid nasal spray, it can take up to two weeks to start working, so again, start using it before your personal pollen trigger is released.
Answer:DNA replication occurs in the cytoplasm of prokaryotes and in the nucleus of eukaryotes.
Explanation: Regardless of where DNA replication occurs, the basic process is the same. The structure of DNA lends itself easily to DNA replication. Each side of the double helix runs in opposite (anti-parallel) directions.
D. is the answer.
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<span>Biotic factors in the Arctic tundra, as with other ecosystems, include living organisms, such as microorganisms, plants and animals. The biotic factors of the tundra include over 1,500 species of plants, which classify as mosses, lichen and grasses. The hardy group of animals calling the tundra home includes many types of mammals and birds, including polar bears, Arctic foxes, caribou and other iconic species. </span>
Answer:
Option B, A population for which p+q = 1 and p2 + 2pq + q2 = 1
Explanation:
As per Hardy Weinberg's first equation, the sum of probability of occurrence of two allele at the locus is equal to one.
Floppy has two genes i.e F and f and f(F) = p and f(f) = q then
As per Hardy Weinberg's second equation
which shows that
Frequency of occurence of genotype FF is a given population is 
Frequency of occurence of genotype ff is a given population is 
Frequency of occurence of genotype FF is a given population is 
