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Alisiya [41]
3 years ago
9

Please help me! how can invasive species change an ecosystem?

Biology
2 answers:
s344n2d4d5 [400]3 years ago
7 0
Invasive species can change in ecosystem by making there “community “ into theres. Also an invasive species can change an ecosystem by spreading disease, and can be harmful to other species around them.
nlexa [21]3 years ago
4 0

Answer:

by introducing an invasive species it can drastically change the ecosystem. let's say you have the manatee, it has no natural predators, if you add an invasive species that eats manatees it may cause other things to start eating them too. this would cause the population to dwindle until there are few to none left because the invasive species population will go unchecked because nothing is accustom to eating them

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The answer is <span>A. p2 = 0.36, 2pq = 0.48, q2 = 0.16.
</span>
Let's first distinguish alleles frequencies from genotypes frequencies:
p - a frequency of R allele,
q - a frequency of r allele,
p² - a frequency of RR genotype,
2pq - a frequency of Rr genotype,
q² - a frequency of rr genotype.

<span>The gene frequency of allele r changes from 0.38 to 0.40, thus:
</span>q = 0.40

Now, we will implement this in the following equation:
p + q = 1

If q = 0.40, then:
p + 0.40 = 1
⇒ p = 1 - 0.40
⇒ p = 0.60

Now, the frequencies of both alleles are know and it is easy to calculate the <span>genotype frequencies:
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- the frequency of Rr genotype: 2pq = 2 · 0.60 · 0.40 = 0.48
- the frequency of rr genotype: q² = 0.40² = 0.16

Therefore, the new genotype frequencies in that population are <span>p2 = 0.36, 2pq = 0.48, q2 = 0.16.</span>
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