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const2013 [10]
3 years ago
8

N African savannas elephants are a keystone species. Elephants eat small trees, such as acacia, that grow on the savanna. Even i

f an acacia tree grows to a height of several feet, elephants are able to knock over the tree and uproot it.
Imagine a drastic decline the elephant population that lives within the African savannas. What would be the inevitable result?
Biology
1 answer:
S_A_V [24]3 years ago
3 0

Answer:

The Acacia tree's and other small plants the elephants eat would begin to grow in terms of population. Similar to if the elaphants grew in population, the Acacia tree's would decrease in population.

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Consider a locus with two alleles - A and a. These alleles are codominant, meaning that the fitness of the heterozygote is halfw
bearhunter [10]

Answer:

Question 1.

The mean relative fitness is 0.85

Question 2.

The expected allele frequency change of A, p = 0.63: AA, p2 =0.63 x 0.63 = 0.39.

Explanation:

Mean relative fitness is given as

p2W(AA) + 2pqW(Aa) + q2W(aa).

Where W(AA)= 1.00, W(Aa) = 0.80, W(aa) = 0.60

Firstly, find p2, 2pq, q2 which are the frequencies of AA, Aa and aa respectively.

AA= 500,Aa=250 ,aa=250. Total is 1000

Frequency of A, p=

250/2)+500= 625.

625/1000= 0.625.

Therefore A, p is 0.625

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For q, since p+q =1

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2pq= 2x0.625x0.375= 0.47.

Mean relative fitness is

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Question 2.

From Hardy-Weinberg equilibrium

F = p2 + 2pq + q2.

Frequency of A, p= 0.625 and AA, p2 is 0.625 x 0. 0625= 0.39.

3 0
3 years ago
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