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cluponka [151]
3 years ago
9

What is natural selection and what are its effects on allele frequencies? (Due at 11:59)

Biology
1 answer:
Roman55 [17]3 years ago
6 0
Natural selection can cause changes in allele frequencies when adaptations that are caused by natural selection cause fitness-increasing alleles to become more common in the population
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Explanation:

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First we have to calculate the rate constant, we use the formula :

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Now we have to calculate the age of the sample:

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t=\frac{2.303}{k}\log\frac{a}{a-x}

where,

k = rate constant  = 1.21\times 10^{-4}\text{years}^{-1}
t = age of sample  = ?
a = let initial amount of the reactant  = 100 g
x = amount decayed = 75 g
a - x = amount left after decay process  = 100 - 75 = 25 g  Now put all the given values in above equation, we get
[tex]t==\frac{2.303}{1.21\times 10^{-4}}\log\frac{100}{25}

t=11459years

The fossil is 11459 years old.

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