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In a population of 1000 lemmings there are two alleles for skin colour, the dominant colour being cream (C) and the recessive being white (c). 350 individuals have white skin. Use Hardy-Weinberg to predict the number of homozygous recessive individuals.

Hardy-Weinberg Principle states that in a population of randomly mating individuals: p + q = 1 p 2 +2pq+q 2 =1 White fur = homozygous recessive = q 2 = 350/100 = 0.35 Therefore q = sqrt(0.35)=0.59 (2sf)p = 1...
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Answered by Igbunu O. • Biology tutor
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To what extent was pre-war Nazi social policy a success?

The student should address:The demonization of Germany's Jewish population - the Nuremburg Laws, Boycotts of Jewish owned businesses and Kristallnacht in particular. As well as the effectiveness of propagand...
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Answered by Alexander M. • History tutor
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translate the following - "Si no limpiamos nuestros mares vamos a tener problemas ecológicos con la basura en el futuro"

"If we do not clean our seas we will have many ecological problems with waste in the future" - the student will build on their topical vocabulary with any missing vocabulary or gramatical errors be...
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Answered by Alexander M. • Spanish tutor
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I want to apply to medical school. Can you help me?

Answered in interview.
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Explain how integration via substitution works.

The function in terms of x should be broken down into two easier to integrate functions, like so f(x) = g(h(x)). if we say that u=h(x) is our substitution then we can integrate in terms of u now, however the...
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Answered by Daniel F. • Maths tutor
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