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What is crossing over?

Crossing over is a process that happens during meiosis and results in genetic variation in gametes. It happens between prophase and metaphase. Pairs of homologous chromosomes lined up next to each other t...

EB
Answered by Erin B. Biology tutor
29106 Views

What are the similarities and differences between photophosphorylation and oxidative phosphorylation?

Both processes operate on the same basic principle; passing electrons down a chain in order to create a proton (H+) gradient, allowing the formation of...

GM
Answered by Gloria M. Biology tutor
40455 Views

Explain the causes and consequences of sickle cell anaemia (5)

Sickle cell anaemia is caused by a point mutation, exchanging adenine for thymine in the DNA codon CTC. This causes a change in the mRNA to GUG, which results in a change in the polypeptide sequence durin...

AS
Answered by Anna S. Biology tutor
12118 Views

How do you factorise the following quadratic: x^2 - 5*x - 14?

An example of an application of factorising quadratics is to find the unknown in the equation, x. Factorising means writing the above equation in the form (x+a)(x+b)=0 Using FOIL (First, Outer, Inner, Las...

EP
Answered by Emma P. Maths tutor
3693 Views

Explain the effects of German hyperinflation? (6)

The German hyperinflation of 1923 had severe socio-economic and political consequences for the stability of the Weimar Republic. Economically, the value of the Papiermark rapidly plummeted over the course...

BS
Answered by Benedict S. History tutor
4995 Views

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